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Se afișează postările cu eticheta hard drive data recovery. Afișați toate postările
marți, 1 noiembrie 2016
DIY How to: a successful data recovery from clicking hard drive. Recover your files Yourself
In this video I explain how to recover data from a clicking hard drive. There are several types of clicks of death. This click is recoverable.
How to recover data from usb and external hard drive
If you received an error such as "You need to format the disk in drive before you can use it" "code 43 " " USB Device Not recognized"
The solution is in the video.
Download Links:
Partition Find and Mount:
http://findandmount.com/
How to recover data from a dead hard drive (for beginners)
This is a quick video to show how you can do a data recovery from a dead hard drive.
Important Notes: - If your hard disk is still under the guarantee time, it would be wiser to send it to the manufacturing company instead of opening it this way.
- This video explains how to solve one specific problem that might face the hard disk. Follow these instructions only if the hard drive you have sound's like the one in this video.
Recover Data from A Dead Hard drive [FREE!]
If you've had a hard drive crash, or stop working and you can't accesses your data,
Then Check out this video! I'll show you how to recover data from a hardrive that you can't even read from!
As long as your PC knows the data is there, you can use TestDisk to recover the data from it.
duminică, 28 septembrie 2014
How to recover a damaged HD
Recovering a damaged HD can be a fairly easy process, but there is no guarantee that you will be able to recover all your files, no matter which method you choose. If the hard drive on your computer is temporarily locked up or crashed completely, try some different techniques is your best bet to try to recover the damaged HD.
Determine the cause of the accident. If the light in front of the computer tower is flashing but the computer itself is not booting, your problem is probably related to software, ie, is related to viruses or because of a corrupted file system. Files lost during this type of accident can usually be recovered if you reinstall the operating system. If the tower light is not flashing, there is no hard disk activity, and there is probably a mechanical problem, which may require a computer technician.
Get a good program of data recovery software. Numerous software companies offer these types of programs and many of them have proven to be effective. You can search free data recovery software clicking Freewarefiles. After installing the software, you will be guided through the process. The program will automatically create backup copies of all the recovered files and folders.
Remove the hard drive, put it in a large plastic bag and then put it in the freezer for a few hours has proved effective at doing hard work enough time to recover some files. This option should only be attempted after using a program first data recovery software.
Data recovery from physically damaged hardware has two popular methods. The first involves the repair of damage caused by the replacement of defective parts in the hard disk drive. This will allow the hard drive to work again, allowing that access your files. If you know nothing about replacing computer hardware, contact a repair shop computer in your area to help you.
The second most popular method to recover a corrupt HD procedure includes a disk image, which recovers readable piece by piece of data. Once the image is acquired and saved, it can be analyzed for the pursuit of further damage and allow that many of the original files are rebuilt. Again, this should be done by a specialist in computer hardware.
Determine the cause of the accident. If the light in front of the computer tower is flashing but the computer itself is not booting, your problem is probably related to software, ie, is related to viruses or because of a corrupted file system. Files lost during this type of accident can usually be recovered if you reinstall the operating system. If the tower light is not flashing, there is no hard disk activity, and there is probably a mechanical problem, which may require a computer technician.
Get a good program of data recovery software. Numerous software companies offer these types of programs and many of them have proven to be effective. You can search free data recovery software clicking Freewarefiles. After installing the software, you will be guided through the process. The program will automatically create backup copies of all the recovered files and folders.
Remove the hard drive, put it in a large plastic bag and then put it in the freezer for a few hours has proved effective at doing hard work enough time to recover some files. This option should only be attempted after using a program first data recovery software.
Data recovery from physically damaged hardware has two popular methods. The first involves the repair of damage caused by the replacement of defective parts in the hard disk drive. This will allow the hard drive to work again, allowing that access your files. If you know nothing about replacing computer hardware, contact a repair shop computer in your area to help you.
The second most popular method to recover a corrupt HD procedure includes a disk image, which recovers readable piece by piece of data. Once the image is acquired and saved, it can be analyzed for the pursuit of further damage and allow that many of the original files are rebuilt. Again, this should be done by a specialist in computer hardware.
How to recover data from a non-functional Hard Drive
A non-functional hard drive will not load the operating system, but you may still be able to recover data from it. If you already tried a re-installation in place of your operating system (which destroys the previous installation, but not your data files), you have several methods available to attempt data recovery. Things you need
computer hard drive failed
device or media containing "boot disk" software
work computer, it is recommended
Freezer, recommended
insert or attach a device (floppy disk, optical disk, USB flash drive or external hard drive) boot disk containing software. Some examples are Windows 98 boot files, Bart PE, the Ultimate Boot Disk or a small Linux distribution.
Start the computer and boot from the startup disk. Pay attention to prompts: You may be prompted to press a specific button to start from the boot device instead of the hard drive. If your computer does not try to boot from your boot device, enter the computer's BIOS and change the boot order so that it gives you that option. BIOS of the computer is different, depending on its creator: F1, F2 or Delete will usually take you to your BIOS. Browse menus to find the BIOS boot order. Place the device you want to start from the top of the list.
Run a tool that will show you the files on your computer's hard drive. If your tool boot is a boot disk Windows 98, the command to do this is typically "dir c:" (without the quotes), where c: is the drive letter assigned to your hard drive. Tools more sophisticated graphical tools for startup will allow you to search their files. If you see your files on the hard drive, your data is probably intact.
Copy your files to offline storage such as a USB flash drive or a second hard drive.
data recovery after removing the hard disk
With the computer off, remove the hard drive. Follow procedures for proper grounding and just deal with the drive by the sides so you do not damage it.
Mount the hard drive into a working computer. With the computer off, you can physically mount the drive in a computer with an extra connector type requires hard drive, or you can mount the hard drive on an external hard drive enclosure. Make sure to use a cabinet of the right size and the right to your hard drive connector. After you mount the drive in an external enclosure, connect the enclosure to computer.If work the computer does not detect the drive automatically, use the instructions that came with the cabinet to ensure that the cabinet is installed correctly. Re-start your computer. If the computer still does not detect the drive, the drive may be too damaged to data to be recovered in this way.
Click on "My Computer" (or Windows Explorer) to browse the non-functional hard drive. If your files are listed, copy them to the hard disk of the working computer or other storage. If your files are not listed, the unit may be too damaged to data to be recovered in this way.
Wrap seal the unit non-functional hard drive in a plastic bag and place it in your freezer. After 48 hours or more, remove the hard drive, unseal the bag and place it in a safe place to come to room temperature place. To be completely safe, let the car rest there for 24 hours before proceeding to make sure that there is no rest or hard disk condensation.
Replace the computer's hard disk or hard drive enclosure with the computer off. Turn on the computer and check to see if you can see your files. If so, try to copy them to a different device. If not, the services of professional data recovery can only be able to recover some or all of your data.
computer hard drive failed
device or media containing "boot disk" software
work computer, it is recommended
Freezer, recommended
insert or attach a device (floppy disk, optical disk, USB flash drive or external hard drive) boot disk containing software. Some examples are Windows 98 boot files, Bart PE, the Ultimate Boot Disk or a small Linux distribution.
Start the computer and boot from the startup disk. Pay attention to prompts: You may be prompted to press a specific button to start from the boot device instead of the hard drive. If your computer does not try to boot from your boot device, enter the computer's BIOS and change the boot order so that it gives you that option. BIOS of the computer is different, depending on its creator: F1, F2 or Delete will usually take you to your BIOS. Browse menus to find the BIOS boot order. Place the device you want to start from the top of the list.
Run a tool that will show you the files on your computer's hard drive. If your tool boot is a boot disk Windows 98, the command to do this is typically "dir c:" (without the quotes), where c: is the drive letter assigned to your hard drive. Tools more sophisticated graphical tools for startup will allow you to search their files. If you see your files on the hard drive, your data is probably intact.
Copy your files to offline storage such as a USB flash drive or a second hard drive.
data recovery after removing the hard disk
With the computer off, remove the hard drive. Follow procedures for proper grounding and just deal with the drive by the sides so you do not damage it.
Mount the hard drive into a working computer. With the computer off, you can physically mount the drive in a computer with an extra connector type requires hard drive, or you can mount the hard drive on an external hard drive enclosure. Make sure to use a cabinet of the right size and the right to your hard drive connector. After you mount the drive in an external enclosure, connect the enclosure to computer.If work the computer does not detect the drive automatically, use the instructions that came with the cabinet to ensure that the cabinet is installed correctly. Re-start your computer. If the computer still does not detect the drive, the drive may be too damaged to data to be recovered in this way.
Click on "My Computer" (or Windows Explorer) to browse the non-functional hard drive. If your files are listed, copy them to the hard disk of the working computer or other storage. If your files are not listed, the unit may be too damaged to data to be recovered in this way.
Wrap seal the unit non-functional hard drive in a plastic bag and place it in your freezer. After 48 hours or more, remove the hard drive, unseal the bag and place it in a safe place to come to room temperature place. To be completely safe, let the car rest there for 24 hours before proceeding to make sure that there is no rest or hard disk condensation.
Replace the computer's hard disk or hard drive enclosure with the computer off. Turn on the computer and check to see if you can see your files. If so, try to copy them to a different device. If not, the services of professional data recovery can only be able to recover some or all of your data.
How to recover data from a damaged or spoiled HD
Whether you're a coach or not, surely at some point in your life you will go through the misfortune of having a corrupted or damaged hard drive. The hard drive failures are almost inevitable. Even, I have a theory that the sequence of life is this: You're born, grows, spoils the HD of your computer, reproduces, grows old and dies.
Before you take any further action about the incident, it is extremely essential that you test your hard drive on another machine. The best way to do this is to use a USB to IDE / SATA, which causes your hard drive to function as an "external hd." If you do not have one available, you can connect the HD directly into another computer as a secondary drive. If you do this, make sure that the machine is configured to recognize both drives in the BIOS, or you will not be able to access the second partition.
It is important that the hard drive is connected as Secondary (SLAVE), for acting in this way, even if the disc is slightly damaged, it is possible to have it recognized. If you have difficulties as configuring a new hard drive, a brief searched on Google can help you with that.
Try copying the data to another drive
After connecting the drive to another computer internally or with the USB adapter, make sure you can browse the contents of the hard drive. If you can, try to copy the data off the HD (store on a flash drive, for example). There are high chances that only the operating system is corrupted and user data are still good.
Place the hard drive in the freezer
If all other methods fail, there is another non-traditional method that can allow you to recover files from your hard drive, and this method is based on the placement of your HD in the freezer.
The first thing to do is remove the drive from the computer and put it in a sealed plastic bag to prevent condensation. Then put the drive in a freezer or freezer of your refrigerator and leave it there for several hours (or even during the night). Done so, remove the hard drive from the freezer, and connect it to the computer quickly. If it works, I thought would need to copy your files immediately as it will not take long for the disc starts to fail again.
This is because the cold is able to "shrink" the disk and the read head in a few millimeters, so that they do not abut, and can rotate smoothly.
Use a data recovery service
Finally, if none of these methods work, then their problems are much bigger than you imagined it would be, and you need to contact a data recovery service.
These companies use the same technique used by researchers to retrieve files burned and scrapped worldwide hard drives. If you need the same information from your machine, they can certainly help you.
Before you take any further action about the incident, it is extremely essential that you test your hard drive on another machine. The best way to do this is to use a USB to IDE / SATA, which causes your hard drive to function as an "external hd." If you do not have one available, you can connect the HD directly into another computer as a secondary drive. If you do this, make sure that the machine is configured to recognize both drives in the BIOS, or you will not be able to access the second partition.
It is important that the hard drive is connected as Secondary (SLAVE), for acting in this way, even if the disc is slightly damaged, it is possible to have it recognized. If you have difficulties as configuring a new hard drive, a brief searched on Google can help you with that.
Try copying the data to another drive
After connecting the drive to another computer internally or with the USB adapter, make sure you can browse the contents of the hard drive. If you can, try to copy the data off the HD (store on a flash drive, for example). There are high chances that only the operating system is corrupted and user data are still good.
Place the hard drive in the freezer
If all other methods fail, there is another non-traditional method that can allow you to recover files from your hard drive, and this method is based on the placement of your HD in the freezer.
The first thing to do is remove the drive from the computer and put it in a sealed plastic bag to prevent condensation. Then put the drive in a freezer or freezer of your refrigerator and leave it there for several hours (or even during the night). Done so, remove the hard drive from the freezer, and connect it to the computer quickly. If it works, I thought would need to copy your files immediately as it will not take long for the disc starts to fail again.
This is because the cold is able to "shrink" the disk and the read head in a few millimeters, so that they do not abut, and can rotate smoothly.
Use a data recovery service
Finally, if none of these methods work, then their problems are much bigger than you imagined it would be, and you need to contact a data recovery service.
These companies use the same technique used by researchers to retrieve files burned and scrapped worldwide hard drives. If you need the same information from your machine, they can certainly help you.
How to recover data from games when the PS3 says "Hard Drive Corrupted"
It is an unfortunate truth to say that when your hard drive goes problem, you may not be able to recover your data. This will depend on the reason that made your hard drive has a problem: if the damage mechanics you'll need to purchase a new hard drive, but if the damage is logical (or corrupted system files), you can recover your data, or by least format the hard drive and continue using. You need to enter the Restore PS3 menu to repair or format your hard drive.
Hold the "Power" button of the PS3 until it beeps twice; it will take you to the menu of restoration. Connect control of your PS3 console through the USB port to navigate through the options available. You should see six options in total.
Select "Restore Default Settings" option (restore default setting). If the corruption is in the operating system or firmware, restore repair the damage without removing your personal files. However, all that is present in the user account is restored to its default value.
Make sure your PS3 is booting and allowing access to your files. If not, there is a high probability that the problem is in your personal or mechanical hard drive, and not on the system configuration. If you can access the menu system through its user account, you can use the Backup utility to restore the data that are available.
Go back to the menu of restoration, again holding the "Power" (turn) until it beeps twice and the light for the menu button.
Select "Restore PS3 System" and follow the instructions that appear on your screen to complete the process of formatting your hard drive. By doing this, all the data on your hard disk will be deleted and the operating system is reinstalled.
Hold the "Power" button of the PS3 until it beeps twice; it will take you to the menu of restoration. Connect control of your PS3 console through the USB port to navigate through the options available. You should see six options in total.
Select "Restore Default Settings" option (restore default setting). If the corruption is in the operating system or firmware, restore repair the damage without removing your personal files. However, all that is present in the user account is restored to its default value.
Make sure your PS3 is booting and allowing access to your files. If not, there is a high probability that the problem is in your personal or mechanical hard drive, and not on the system configuration. If you can access the menu system through its user account, you can use the Backup utility to restore the data that are available.
Go back to the menu of restoration, again holding the "Power" (turn) until it beeps twice and the light for the menu button.
Select "Restore PS3 System" and follow the instructions that appear on your screen to complete the process of formatting your hard drive. By doing this, all the data on your hard disk will be deleted and the operating system is reinstalled.
Recovery HD.
HD or HDD is a device for storing information in digital mode, which uses the magnetic means for reading and writing data. The first HD was manufactured by IBM in 1956, and yet its mode of operation is very similar to modern hard drives.
Like all electromechanical equipment, the hard drive one time has a shelf life. Also, the HD is susceptible to problems related to the type of use, manufacturing defects, accommodation and handling, power management etc.
The old hard drives were much more problematic than modern. Added to this, it was still necessary to perform complex procedures to put them into operation. Until the 80s it was essential to do a low level format these devices, to demarcate the physical spaces where the sectors and tracks would be located before the partitioning and operating system installation. Put an old HD in production was a chore.
With the advent of the popularity and easy access to computers in the habit of storing information on paper was largely replaced by digital storage containers. This change has brought convenience, savings and better data management. With this, the demand for solutions for recovering damaged hd rose abruptly.
Operation HD
There are several articles in the Hardware Guide that explain, in detail, as an HD works. Either way, we will consider some important points.
The main components of a hard drive are the disk controller (popularly known as logic board), read heads, motor and magnetic media (plates).
The disk controller (disk controller) is responsible for managing low-level operations such as engine operation, movement of the head and the transmission of data to the host controller (host controller or host bus adapter), which interprets this information and delivery to the processor or memory. Too often people confuse the disk controller to the host controller. Are devices with different functions. The disk controller is connected directly to HD, while the host controller is connected directly to the motherboard.
The heads, also known as reading heads are responsible for storing and reading data on the plates. They act as small magnets attached at the end of the HD arms, effecting transactions through the magnetic poles along the alignment of dishes. The result is the famous bits 1 and 0, which will later be transformed into readable data.
The engines are responsible for turning the dishes in a certain rotation and create an air mattress that will allow read heads "float" on the magnetic media.
The plates are disk-shaped component, which contains a magnetic layer where the data is properly stored. They are divided into sectors, tracks and cylinders. As the read heads, the dishes are sensitive to any kind of friction or impact.
A sector is the smallest physical hard disk drive and its size can be 512 or 4096 bytes. The trails are formed by a set of sectors and cylinders are formed by a set of tracks. All this occurs in logical organization level.
Common Problems
The main cause of malfunction on a hard drive are the heads and dishes. These components work intensely at all times and suffer from wear that will shift the internal air to high temperatures.
A defective motor can also compromise the functioning of the hard drive. Although it is more complicated to be solved, the same problem occurs infrequently.
Unlike that discloses internet besides the logic board is among the lowest of troublemakers. Are often mistaken for modules, heads or motor.
During its operation, especially in moments of intense reading and writing, the storage device must remain static without suffering any outside action. At this point, falls, slaps, strokes etc, however small, will damage the HD.
What can not be done.
To become a successful professional in the field of recovery in HD many years of study, with emphasis on the operation of the storage devices, file systems, computer forensics, electronic etc. are needed Also must acquire (and know how to operate) imported special equipment, whose value is often quite high.
One must understand that computer maintenance is different from recovery HD. However, in recent years many computer technicians began to "venture" in the field of data recovery. To make matters worse, there were some dubious "courses" of recovery in HD without recognition from reliable institutions (MEC, for example) and with very low workloads, attempting to market dozens of pseudo professionals every month.
With the market full of untrained technicians, it is common to come across the most bizarre and destructive "methods" of "recovery" on hard drives. Below are some examples.
As many already know, a hard disk must be opened for repair in an extremely clean room, known as Class 100, or a structure that emulates this environment. Some "professionals" believe they can replicate this environment in a bathroom, through the belief that the steam from a shower running for a specified time may sanitize the site, creating an environment conducive to opening the device.
It has long circulated on the internet the information that a HD could come back to life after spending a few hours in a freezer. Exist today supporters of the practice. They believe that low temperatures minimize faults in magnetic media. It does not have scientific proof, this procedure may cause moisture inside the machine because, contrary to what many think, the hard drives are not sealed vacuum.
A practice that seems to be consistent, but that brings more problems than solutions, is the famous exchange logic board. This method is common among inexperienced professionals that exchange without even knowing if it is the cause of the malfunction on the hard disk. However, they ignore the fact that even in identical models, each HD has its own data allocation, as well as the alignment of heads and tables mappings bad sectors, known as P-List and G-List. In practice, the HD receiving the new logic board is not enough even to be recognized by basic (BIOS / UEFI) systems. Even when they are detected, the controller will probably force the damaged hard drive to work as if it were your original HD, could result in permanent data loss.
A defective hard drive must be opened only in the last instance. This procedure involves risks and should be practiced only by skilled and experienced people. It is the trump card of good professionals. However, there are - even some old companies - professionals who violate the seal of HD to perform a simple diagnosis. This is a grotesque procedure that may jeopardize the client's data.
Another common mistake committed by many computer technicians, is to submit a problematic HD programs that perform a lot of reading and writing operations. The fact is that there are no programs that fix hard drives, or blocks or sectors. Applications that promise such a feat, only the dishes on track for bad sectors forcing the controller to remap them. Containing the same data, bad sectors are exchanged for new ones. From there begins the loss of data. Moreover, these programs cause unnecessary stress on an already compromised device. Not infrequently the HD stop in the middle of the process.
There are many other harmful to hard drives that would fit procedures not listed here, and many of these can be avoided by using only common sense.
What Can Be Done
One must keep in mind that the common user or computer technician have few options when hard drives have problems. When you become aware that the hard drive is faulty it is recommended the immediate replacement or seeking professional assistance through a specialized company. However, there are safer ways to test the health of a drive.
The principle of diagnosis in hard disk is to be the least invasive as possible, causing minimal stress on the equipment. Therefore, one should avoid scans sectors or blocks, and you should not turn on / off the HD more than 1 or 2 times.
From the moment that you lose access to the data, the first step is to check if the hard drive is detected by the base system (BIOS / UEFI) and the time that it takes to be identified. A HD that is not recognized or it takes to be detected is damaged. In some cases, the type of damage can make the BIOS crashes or restart the computer.
One should be attentive to the warnings displayed by the basic systems. Messaging system not found, boot failure, disk not found errors and SMART is a bad sign. The operating system can also report these problems. Some stop errors shown in the famous blue Windows screens may indicate problems in the HDD. On Linux systems, these types of errors will be generated in the / var / log / syslog or / var / log / messages.
SMART is a great ally of users and technicians. This technology is characterized by a set of internal routines in HD himself who report their condition. Programs like GSmartControl (Linux / Unix) and the HD Tune (Windows) can interpret the SMART logs, showing details about the status of the hard disk. Thus, one can discover the status of a hard drive, safely, without scanning.
Abrupt shutdowns computer - power outage, for example - can cause problems on hard disks, especially when data transfer is taking place. However, the most common is that only the file system is affected. This is because the journal (records containing changes implemented in file systems) was not properly updated. This type of problem can be solved with system integrity checkers such as CHKDSK (Windows) and Fsck (Linux). But before using these programs you need to make sure that the HD has no physical problems.
The procedures described here are sufficient to discover for defects on a hard drive. Obviously, nothing prevents "experiments" are performed when no important data in question. It depends what you want to do with HD.
conclusion
There are products that should be changed when they have problems such as lamps, lighters, etc. taps Unfortunately, the hard disk is one of them.
The term "Recovery HD" is widely used by lay people who need solutions to recover files on a hard drive that is inaccessible. Repair, literally, is impractical and virtually does not exist. Moreover, such a procedure is not advised, based on practices consistent computational storage.
The good news is that there are companies specializing in recovering information from hard drives that are damaged. Many of them use the term "Recovery HD" on their websites as reference to rescue data in defective hard disks. This makes life easier for lay users searching for this type of solution on the internet.
Modern hard drives store a large amount of information in a small space, or high density is possess. You need to be very careful with these devices because a small damage can affect a large volume of data.
The era of HD is coming to an end. Gradually, the hard disk space will the SSD (solid state disk), which uses chips instead of magnetic disks. Anyway, many of the concepts of diagnosis and recovery HDDs can be applied to SSDs.
Like all electromechanical equipment, the hard drive one time has a shelf life. Also, the HD is susceptible to problems related to the type of use, manufacturing defects, accommodation and handling, power management etc.
The old hard drives were much more problematic than modern. Added to this, it was still necessary to perform complex procedures to put them into operation. Until the 80s it was essential to do a low level format these devices, to demarcate the physical spaces where the sectors and tracks would be located before the partitioning and operating system installation. Put an old HD in production was a chore.
With the advent of the popularity and easy access to computers in the habit of storing information on paper was largely replaced by digital storage containers. This change has brought convenience, savings and better data management. With this, the demand for solutions for recovering damaged hd rose abruptly.
Operation HD
There are several articles in the Hardware Guide that explain, in detail, as an HD works. Either way, we will consider some important points.
The main components of a hard drive are the disk controller (popularly known as logic board), read heads, motor and magnetic media (plates).
The disk controller (disk controller) is responsible for managing low-level operations such as engine operation, movement of the head and the transmission of data to the host controller (host controller or host bus adapter), which interprets this information and delivery to the processor or memory. Too often people confuse the disk controller to the host controller. Are devices with different functions. The disk controller is connected directly to HD, while the host controller is connected directly to the motherboard.
The heads, also known as reading heads are responsible for storing and reading data on the plates. They act as small magnets attached at the end of the HD arms, effecting transactions through the magnetic poles along the alignment of dishes. The result is the famous bits 1 and 0, which will later be transformed into readable data.
The engines are responsible for turning the dishes in a certain rotation and create an air mattress that will allow read heads "float" on the magnetic media.
The plates are disk-shaped component, which contains a magnetic layer where the data is properly stored. They are divided into sectors, tracks and cylinders. As the read heads, the dishes are sensitive to any kind of friction or impact.
A sector is the smallest physical hard disk drive and its size can be 512 or 4096 bytes. The trails are formed by a set of sectors and cylinders are formed by a set of tracks. All this occurs in logical organization level.
Common Problems
The main cause of malfunction on a hard drive are the heads and dishes. These components work intensely at all times and suffer from wear that will shift the internal air to high temperatures.
A defective motor can also compromise the functioning of the hard drive. Although it is more complicated to be solved, the same problem occurs infrequently.
Unlike that discloses internet besides the logic board is among the lowest of troublemakers. Are often mistaken for modules, heads or motor.
During its operation, especially in moments of intense reading and writing, the storage device must remain static without suffering any outside action. At this point, falls, slaps, strokes etc, however small, will damage the HD.
What can not be done.
To become a successful professional in the field of recovery in HD many years of study, with emphasis on the operation of the storage devices, file systems, computer forensics, electronic etc. are needed Also must acquire (and know how to operate) imported special equipment, whose value is often quite high.
One must understand that computer maintenance is different from recovery HD. However, in recent years many computer technicians began to "venture" in the field of data recovery. To make matters worse, there were some dubious "courses" of recovery in HD without recognition from reliable institutions (MEC, for example) and with very low workloads, attempting to market dozens of pseudo professionals every month.
With the market full of untrained technicians, it is common to come across the most bizarre and destructive "methods" of "recovery" on hard drives. Below are some examples.
As many already know, a hard disk must be opened for repair in an extremely clean room, known as Class 100, or a structure that emulates this environment. Some "professionals" believe they can replicate this environment in a bathroom, through the belief that the steam from a shower running for a specified time may sanitize the site, creating an environment conducive to opening the device.
It has long circulated on the internet the information that a HD could come back to life after spending a few hours in a freezer. Exist today supporters of the practice. They believe that low temperatures minimize faults in magnetic media. It does not have scientific proof, this procedure may cause moisture inside the machine because, contrary to what many think, the hard drives are not sealed vacuum.
A practice that seems to be consistent, but that brings more problems than solutions, is the famous exchange logic board. This method is common among inexperienced professionals that exchange without even knowing if it is the cause of the malfunction on the hard disk. However, they ignore the fact that even in identical models, each HD has its own data allocation, as well as the alignment of heads and tables mappings bad sectors, known as P-List and G-List. In practice, the HD receiving the new logic board is not enough even to be recognized by basic (BIOS / UEFI) systems. Even when they are detected, the controller will probably force the damaged hard drive to work as if it were your original HD, could result in permanent data loss.
A defective hard drive must be opened only in the last instance. This procedure involves risks and should be practiced only by skilled and experienced people. It is the trump card of good professionals. However, there are - even some old companies - professionals who violate the seal of HD to perform a simple diagnosis. This is a grotesque procedure that may jeopardize the client's data.
Another common mistake committed by many computer technicians, is to submit a problematic HD programs that perform a lot of reading and writing operations. The fact is that there are no programs that fix hard drives, or blocks or sectors. Applications that promise such a feat, only the dishes on track for bad sectors forcing the controller to remap them. Containing the same data, bad sectors are exchanged for new ones. From there begins the loss of data. Moreover, these programs cause unnecessary stress on an already compromised device. Not infrequently the HD stop in the middle of the process.
There are many other harmful to hard drives that would fit procedures not listed here, and many of these can be avoided by using only common sense.
What Can Be Done
One must keep in mind that the common user or computer technician have few options when hard drives have problems. When you become aware that the hard drive is faulty it is recommended the immediate replacement or seeking professional assistance through a specialized company. However, there are safer ways to test the health of a drive.
The principle of diagnosis in hard disk is to be the least invasive as possible, causing minimal stress on the equipment. Therefore, one should avoid scans sectors or blocks, and you should not turn on / off the HD more than 1 or 2 times.
From the moment that you lose access to the data, the first step is to check if the hard drive is detected by the base system (BIOS / UEFI) and the time that it takes to be identified. A HD that is not recognized or it takes to be detected is damaged. In some cases, the type of damage can make the BIOS crashes or restart the computer.
One should be attentive to the warnings displayed by the basic systems. Messaging system not found, boot failure, disk not found errors and SMART is a bad sign. The operating system can also report these problems. Some stop errors shown in the famous blue Windows screens may indicate problems in the HDD. On Linux systems, these types of errors will be generated in the / var / log / syslog or / var / log / messages.
SMART is a great ally of users and technicians. This technology is characterized by a set of internal routines in HD himself who report their condition. Programs like GSmartControl (Linux / Unix) and the HD Tune (Windows) can interpret the SMART logs, showing details about the status of the hard disk. Thus, one can discover the status of a hard drive, safely, without scanning.
Abrupt shutdowns computer - power outage, for example - can cause problems on hard disks, especially when data transfer is taking place. However, the most common is that only the file system is affected. This is because the journal (records containing changes implemented in file systems) was not properly updated. This type of problem can be solved with system integrity checkers such as CHKDSK (Windows) and Fsck (Linux). But before using these programs you need to make sure that the HD has no physical problems.
The procedures described here are sufficient to discover for defects on a hard drive. Obviously, nothing prevents "experiments" are performed when no important data in question. It depends what you want to do with HD.
conclusion
There are products that should be changed when they have problems such as lamps, lighters, etc. taps Unfortunately, the hard disk is one of them.
The term "Recovery HD" is widely used by lay people who need solutions to recover files on a hard drive that is inaccessible. Repair, literally, is impractical and virtually does not exist. Moreover, such a procedure is not advised, based on practices consistent computational storage.
The good news is that there are companies specializing in recovering information from hard drives that are damaged. Many of them use the term "Recovery HD" on their websites as reference to rescue data in defective hard disks. This makes life easier for lay users searching for this type of solution on the internet.
Modern hard drives store a large amount of information in a small space, or high density is possess. You need to be very careful with these devices because a small damage can affect a large volume of data.
The era of HD is coming to an end. Gradually, the hard disk space will the SSD (solid state disk), which uses chips instead of magnetic disks. Anyway, many of the concepts of diagnosis and recovery HDDs can be applied to SSDs.
How to recover damaged data and HD?
The hard disk is the leading media existing storage on a computer. Although modern hard disks are formidable means of data storage in an increasingly sophisticated and reliable technology tools can not exclude the possibility of damage or problems with the hard drive and it can be a cause of data loss.
There are situations that can be a symptom of a problem and the hard drive can result in data loss. In the presence of a damaged hard disk, for example, may be unable to read the contents of the drive, access files, folders or partitions, or can listen recurring and unusual noises, there may be a lack of data and files, etc.
Faults and malfunctions of a hard disk can be of different types. Can be distinguished in this respect:
The damaged hard drive due to physical damage (electrical and mechanical defects)
The damaged hard drive due to failure of logic (logical errors), ie damage to files stored on HD or OCD, a table listing the contents of the HD and the physical position of them in HD
What is Firmware?
The set of operating instructions programmed directly on the hardware of an electronic device. It is permanently stored in an integrated circuit (chip) memory hardware such as a ROM, PROM, EPROM or EEPROM and flash memory at the time of manufacturing the component. Many simple devices have firmware, including: remote control, handheld calculator, some parts of the computer like hard drive, keyboard, memory card, many scientific instruments and robots. Other more complex devices such as mobile phones, digital cameras, synthesizers, among others, also have a firmware for the execution of their tasks.
As a HD work?
Inside the hard drive, the data is recorded on magnetic disks, called platters. The name "hard" comes precisely from the fact that the internal disks are extremely rigid.
The platters are made of two layers. The first is called the substrate, and is nothing more than a metal disc, made of aluminum alloy. More recently, some manufacturers began to use glass, which offers some advantages such as higher hardness, although it is also more difficult to work with. The first hard drives with glass discs were the IBM Deskstar 75GXP, launched in 2001.
Regardless of the material used, the disk needs to be completely flat. As the discs rotate at high speeds and the read heads work extremely close to the magnetic surface, any change would be fatal. To achieve perfection required, the disc is polished in a clean room, until it becomes perfectly flat. Then comes the final part, which is the placement of the magnetic surface on both sides of the disc.
What is electronic component?
The electronic components are the structure of an electronic circuit, ie, are the components that are part of any electrical or electronic circuit (from the simplest to the most complex), which are interconnected. Can also be defined as the entire electronic component device that transmits electric power via a conductor or semiconductor or.
The electrostatic studying?
Electrostatic is the part of physics that studies the behavior of electric charges itself and the processes by which the same is eltrizam. Electricity as a science dates from 600 BC, when the Greeks observed that a stone of amber, when rubbed with wool, acquired the ability to attract small objects for you.
What is it and what makes an SDM component?
SMD means dispositvos surface mounted. It is a new technology that aims to reduce the space occupied by the traditional components (resistors, diodes, transistors and ICs) on certain boards, such as computers and other devices that need to be complex, but take up minimal space.
What are the means that cause ESD?
Basically the most common way to ESD is the cause mishandling of components. One should not dismiss an ESD generated in the manufacture of the component, but it is evident that many users, technicians and salespeople do not manipulate the components correctly, thanks to this, generating the ESDs.
The big problem is that, as I mentioned in the title, it is invisible and insensible to humans. This makes think people do not believe much in damages that a mishandling may cause. If all the pieces correctly to manipulate sure the index returned parts and problems to solve would be reduced drastically.
What is printed circuit?
The printed circuit boards were created to replace the old bridges were fixed terminals where the electronic components in assembly known in the jargon as electronic assembly "spider" because the final look that took the circuit, especially where electronic valves and their multiple pins there socket mounting brackets.
The printed circuit board consists of a phenolite, glass fiber, polyester fiber, polyester film, based on different specific polymers, etc., having the surface covered on one or both sides with thin copper film, silver film, or alloys of gold, nickel and others, in which are conductive tracks that represent the circuit which will be fixed electronic components drawn.
What is HD?
The HD is the memory of the computer itself, the configuration of a computer is the greatest number, for example, if the computer has memory 2 GB / 320 GB, it has the RAM memory, volatile memory that goes off at shutdown, 2 GB and 320 GB HD, memory that stores files and programs and does not go off when the computer is turned off.
The PCB is?
The PCB is the basic component of the motherboard is the PCB, the printed circuit board where the other components are soldered. Although only two faces are visible, the PCB of the motherboard comprises a total from 4 to 10 plates (total of 8 to 20 sided!). Each plate has a portion of the tracks needed, and they are joined by soldering points strategically positioned. That is, although united after they appear to be a single board, we actually have a sandwich of several boards.
There are situations that can be a symptom of a problem and the hard drive can result in data loss. In the presence of a damaged hard disk, for example, may be unable to read the contents of the drive, access files, folders or partitions, or can listen recurring and unusual noises, there may be a lack of data and files, etc.
Faults and malfunctions of a hard disk can be of different types. Can be distinguished in this respect:
The damaged hard drive due to physical damage (electrical and mechanical defects)
The damaged hard drive due to failure of logic (logical errors), ie damage to files stored on HD or OCD, a table listing the contents of the HD and the physical position of them in HD
What is Firmware?
The set of operating instructions programmed directly on the hardware of an electronic device. It is permanently stored in an integrated circuit (chip) memory hardware such as a ROM, PROM, EPROM or EEPROM and flash memory at the time of manufacturing the component. Many simple devices have firmware, including: remote control, handheld calculator, some parts of the computer like hard drive, keyboard, memory card, many scientific instruments and robots. Other more complex devices such as mobile phones, digital cameras, synthesizers, among others, also have a firmware for the execution of their tasks.
As a HD work?
Inside the hard drive, the data is recorded on magnetic disks, called platters. The name "hard" comes precisely from the fact that the internal disks are extremely rigid.
The platters are made of two layers. The first is called the substrate, and is nothing more than a metal disc, made of aluminum alloy. More recently, some manufacturers began to use glass, which offers some advantages such as higher hardness, although it is also more difficult to work with. The first hard drives with glass discs were the IBM Deskstar 75GXP, launched in 2001.
Regardless of the material used, the disk needs to be completely flat. As the discs rotate at high speeds and the read heads work extremely close to the magnetic surface, any change would be fatal. To achieve perfection required, the disc is polished in a clean room, until it becomes perfectly flat. Then comes the final part, which is the placement of the magnetic surface on both sides of the disc.
What is electronic component?
The electronic components are the structure of an electronic circuit, ie, are the components that are part of any electrical or electronic circuit (from the simplest to the most complex), which are interconnected. Can also be defined as the entire electronic component device that transmits electric power via a conductor or semiconductor or.
The electrostatic studying?
Electrostatic is the part of physics that studies the behavior of electric charges itself and the processes by which the same is eltrizam. Electricity as a science dates from 600 BC, when the Greeks observed that a stone of amber, when rubbed with wool, acquired the ability to attract small objects for you.
What is it and what makes an SDM component?
SMD means dispositvos surface mounted. It is a new technology that aims to reduce the space occupied by the traditional components (resistors, diodes, transistors and ICs) on certain boards, such as computers and other devices that need to be complex, but take up minimal space.
What are the means that cause ESD?
Basically the most common way to ESD is the cause mishandling of components. One should not dismiss an ESD generated in the manufacture of the component, but it is evident that many users, technicians and salespeople do not manipulate the components correctly, thanks to this, generating the ESDs.
The big problem is that, as I mentioned in the title, it is invisible and insensible to humans. This makes think people do not believe much in damages that a mishandling may cause. If all the pieces correctly to manipulate sure the index returned parts and problems to solve would be reduced drastically.
What is printed circuit?
The printed circuit boards were created to replace the old bridges were fixed terminals where the electronic components in assembly known in the jargon as electronic assembly "spider" because the final look that took the circuit, especially where electronic valves and their multiple pins there socket mounting brackets.
The printed circuit board consists of a phenolite, glass fiber, polyester fiber, polyester film, based on different specific polymers, etc., having the surface covered on one or both sides with thin copper film, silver film, or alloys of gold, nickel and others, in which are conductive tracks that represent the circuit which will be fixed electronic components drawn.
What is HD?
The HD is the memory of the computer itself, the configuration of a computer is the greatest number, for example, if the computer has memory 2 GB / 320 GB, it has the RAM memory, volatile memory that goes off at shutdown, 2 GB and 320 GB HD, memory that stores files and programs and does not go off when the computer is turned off.
The PCB is?
The PCB is the basic component of the motherboard is the PCB, the printed circuit board where the other components are soldered. Although only two faces are visible, the PCB of the motherboard comprises a total from 4 to 10 plates (total of 8 to 20 sided!). Each plate has a portion of the tracks needed, and they are joined by soldering points strategically positioned. That is, although united after they appear to be a single board, we actually have a sandwich of several boards.
RAID data recovery is an exercise in high-tech
RAID data recovery requires a high level of technical skill and specialized infrastructures. Not all data recovery companies will have sufficient resources. So your first task if you ever need RAID data recovery is to find a data recovery company with a successful record of recovering data from all types of RAID systems.
What is RAID?
RAID is an acronym for Redundant Array of Independent Disks or Redundant Array of Inexpensive Disks. It improves disk read / write operations and incorporates fault tolerant features. To some extent, data recovery is built on RAID systems.
A RAID system will have a number of disk drives, all controlled by a RAID controller. The controller manages all of the different units and presents a single logical view of data for the system. The function of the control unit can offer different types of drive management utilities, such as scanning or formatting a particular unit.
Redundancy is built with the system to be able to continue working even if a drive fails. A complex mathematical logic ensures that the system can continue to read / write, even if a disk is offline.
The logical array ensures balanced data read / write operations. Instead of overloading just one disc with all the work, the flow of data across all physical drives.
RAID data recovery
RAID data recovery begins with the reconstruction of the logic array. The logical array represents an integrated view of data. The original RAID configuration is restored through the array rebuild and this ensures that the next step in repairing the file system is error free.
If you try to recover the file system without first rebuilding the array, a large number of errors may result and the file system can be corrupted. The array rebuild should only be attempted by those with the required level of expertise. This is something that few data recovery companies can arrange make sure you have found can do this kind of work.
The correct rebuilding of RAID array ensures quality data recovery and reconstruction may have individual units before the rebuild, for example, if the server was in a fire or flood. Do not be tempted to just RAID controller. This is a hit or miss and may result in further damage to the matrix.
RAID data recovery involves additional complexity because there are different levels of RAID, RAID controllers and RAID architectures. Units can also be used in different type, make or model. The reasons for the loss of data can also be varied and may require different approaches for recovery.
Recovery HD
Recovery HD (data recovery in hd) is the name given to the set of actions that aim to extract data from a damaged hard drive, regardless of its interface (Go, SATA, SCSI etc.).
It is likely that the first techniques designed to recover hd occurred in the 70s and came from countries - probably the socialist bloc - where it was difficult to obtain spare computer for the purpose of replacement. This scenario has led some professionals to study in depth the operation of hard drives in search for solutions to repair these devices.
Recovery or repair hd hd are terms adopted by the specialized companies, because they are widely used by lay people when searching solutions for problems with hard drives. In reality, it is very difficult to fix a hd, but it is perfectly possible to recover the information contained in it, using appropriate techniques and tools.
Among the components responsible for storing information on a hard drive, the highlights are the read heads and magnetic platters. Heads perform the conversion of electrical energy into magnetic (and vice versa) so there is reading and writing (bits 1 and 0) in the dishes. The logic boards are also very important because they contain circuits whose function is to control the entire operation of the hard drive.
Any action aimed at recovering hd damaged by physical problems, has a good chance of success if the professional familiar with its components and filesystem.
What is RAID?
RAID is an acronym for Redundant Array of Independent Disks or Redundant Array of Inexpensive Disks. It improves disk read / write operations and incorporates fault tolerant features. To some extent, data recovery is built on RAID systems.
A RAID system will have a number of disk drives, all controlled by a RAID controller. The controller manages all of the different units and presents a single logical view of data for the system. The function of the control unit can offer different types of drive management utilities, such as scanning or formatting a particular unit.
Redundancy is built with the system to be able to continue working even if a drive fails. A complex mathematical logic ensures that the system can continue to read / write, even if a disk is offline.
The logical array ensures balanced data read / write operations. Instead of overloading just one disc with all the work, the flow of data across all physical drives.
RAID data recovery
RAID data recovery begins with the reconstruction of the logic array. The logical array represents an integrated view of data. The original RAID configuration is restored through the array rebuild and this ensures that the next step in repairing the file system is error free.
If you try to recover the file system without first rebuilding the array, a large number of errors may result and the file system can be corrupted. The array rebuild should only be attempted by those with the required level of expertise. This is something that few data recovery companies can arrange make sure you have found can do this kind of work.
The correct rebuilding of RAID array ensures quality data recovery and reconstruction may have individual units before the rebuild, for example, if the server was in a fire or flood. Do not be tempted to just RAID controller. This is a hit or miss and may result in further damage to the matrix.
RAID data recovery involves additional complexity because there are different levels of RAID, RAID controllers and RAID architectures. Units can also be used in different type, make or model. The reasons for the loss of data can also be varied and may require different approaches for recovery.
Recovery HD
Recovery HD (data recovery in hd) is the name given to the set of actions that aim to extract data from a damaged hard drive, regardless of its interface (Go, SATA, SCSI etc.).
It is likely that the first techniques designed to recover hd occurred in the 70s and came from countries - probably the socialist bloc - where it was difficult to obtain spare computer for the purpose of replacement. This scenario has led some professionals to study in depth the operation of hard drives in search for solutions to repair these devices.
Recovery or repair hd hd are terms adopted by the specialized companies, because they are widely used by lay people when searching solutions for problems with hard drives. In reality, it is very difficult to fix a hd, but it is perfectly possible to recover the information contained in it, using appropriate techniques and tools.
Among the components responsible for storing information on a hard drive, the highlights are the read heads and magnetic platters. Heads perform the conversion of electrical energy into magnetic (and vice versa) so there is reading and writing (bits 1 and 0) in the dishes. The logic boards are also very important because they contain circuits whose function is to control the entire operation of the hard drive.
Any action aimed at recovering hd damaged by physical problems, has a good chance of success if the professional familiar with its components and filesystem.
Data Recovery service in HD
The procedures used in the recovery hd (hd data recovery) involve specific equipment, accurate knowledge, adequate environment, and a lot of experience. All this apparatus is due to the fact that hard drives are fragile digital storage and functioning (physical and logical) complex devices.
There are a number of components present in HDS, where they are damaged can lead to loss of data. Among these, we mention the read heads, motor, PCB, magnetic disks etc. In the case of logical problems, we have errors with modules, DCO, HPA etc. There is still the inconvenience caused by the two types of damage simultaneously.
Modern hard drives have two lists (or tables) that compute internal bad sectors (bad sectors). The primary list is created at the end of the manufacturing of hard, while the other is filled disks process as they are encountered bad sectors during the life of the hd. The malfunction of them also cause data loss.
Before starting any repair the hd is due, first, to detect your problem. The diagnosis should not be invasive to save the hard disk even greater damage. Experienced professionals are able to discover defects, just watching the operation of the device for a few seconds. Some of them can perform this procedure with the device turned off. When performing this step with due care and proper way, the chances of recovering data from hd increase considerably.
After finding the cause of the malfunction, begins the process of stabilizing the hd. At this stage, repair techniques in order to make it work in a relatively stable manner are used, even for a few hours, so that you can recover your files. The flagship brand of this phase is the feat of literally recover hd.
There are cases where it is not possible to stabilize a damaged hard drive using usual methods. For these situations the Hosco Technology has own programs and scripts, optimized for reading this type of media content. Over the years the company has developed dozens of forks and efficient scripts software, increasing the chance of success than those who work with generic procedures.
In recent years, the market recovery was flooded with unemployed and adventurous, so it is important to be careful when choosing a company. In addition, the successful recovery of damaged hd depends not only on the quality of the service performed, but also the actions taken by the user, after the equipment fails. The recommendation is to turn off the device immediately and refer you to a specialist, with certified people such as Technology Hosco. Any attempt to repair the hd, performed by unskilled personnel (users, operators, computer technicians etc) may result in enhancement of specialized service or even result in the impossibility of restoring the data stored on the hard drive.
Behavior exhibited by a defective hard drive:
It is no longer recognized by the BIOS or EFI
The disk capacity displayed in BIOS is incorrect
Messages "read error" when handling files
Messages suggesting formatting hard drive
Messages requesting the check disk (chkdsk)
Freezes OS
Unusual noises or noises, such as "click"
Magnetic disks have bad blocks
Recovery HD
Recovery HD (data recovery in hd) is the name given to the set of actions that aim to extract data from a damaged hard drive, regardless of its interface (Go, SATA, SCSI etc.).
It is likely that the first techniques designed to recover hd occurred in the 70s and came from countries - probably the socialist bloc - where it was difficult to obtain spare computer for the purpose of replacement. This scenario has led some professionals to study in depth the operation of hard drives in search for solutions to repair these devices.
Recovery or repair hd hd are terms adopted by the specialized companies, because they are widely used by lay people when searching solutions for problems with hard drives. In reality, it is very difficult to fix a hd, but it is perfectly possible to recover the information contained in it, using appropriate techniques and tools.
Among the components responsible for storing information on a hard drive, the highlights are the read heads and magnetic platters. Heads perform the conversion of electrical energy into magnetic (and vice versa) so there is reading and writing (bits 1 and 0) in the dishes. The logic boards are also very important because they contain circuits whose function is to control the entire operation of the hard drive.
Any action aimed at recovering hd damaged by physical problems, has a good chance of success if the professional familiar with its components and filesystem.
There are a number of components present in HDS, where they are damaged can lead to loss of data. Among these, we mention the read heads, motor, PCB, magnetic disks etc. In the case of logical problems, we have errors with modules, DCO, HPA etc. There is still the inconvenience caused by the two types of damage simultaneously.
Modern hard drives have two lists (or tables) that compute internal bad sectors (bad sectors). The primary list is created at the end of the manufacturing of hard, while the other is filled disks process as they are encountered bad sectors during the life of the hd. The malfunction of them also cause data loss.
Before starting any repair the hd is due, first, to detect your problem. The diagnosis should not be invasive to save the hard disk even greater damage. Experienced professionals are able to discover defects, just watching the operation of the device for a few seconds. Some of them can perform this procedure with the device turned off. When performing this step with due care and proper way, the chances of recovering data from hd increase considerably.
After finding the cause of the malfunction, begins the process of stabilizing the hd. At this stage, repair techniques in order to make it work in a relatively stable manner are used, even for a few hours, so that you can recover your files. The flagship brand of this phase is the feat of literally recover hd.
There are cases where it is not possible to stabilize a damaged hard drive using usual methods. For these situations the Hosco Technology has own programs and scripts, optimized for reading this type of media content. Over the years the company has developed dozens of forks and efficient scripts software, increasing the chance of success than those who work with generic procedures.
In recent years, the market recovery was flooded with unemployed and adventurous, so it is important to be careful when choosing a company. In addition, the successful recovery of damaged hd depends not only on the quality of the service performed, but also the actions taken by the user, after the equipment fails. The recommendation is to turn off the device immediately and refer you to a specialist, with certified people such as Technology Hosco. Any attempt to repair the hd, performed by unskilled personnel (users, operators, computer technicians etc) may result in enhancement of specialized service or even result in the impossibility of restoring the data stored on the hard drive.
Behavior exhibited by a defective hard drive:
It is no longer recognized by the BIOS or EFI
The disk capacity displayed in BIOS is incorrect
Messages "read error" when handling files
Messages suggesting formatting hard drive
Messages requesting the check disk (chkdsk)
Freezes OS
Unusual noises or noises, such as "click"
Magnetic disks have bad blocks
Recovery HD
Recovery HD (data recovery in hd) is the name given to the set of actions that aim to extract data from a damaged hard drive, regardless of its interface (Go, SATA, SCSI etc.).
It is likely that the first techniques designed to recover hd occurred in the 70s and came from countries - probably the socialist bloc - where it was difficult to obtain spare computer for the purpose of replacement. This scenario has led some professionals to study in depth the operation of hard drives in search for solutions to repair these devices.
Recovery or repair hd hd are terms adopted by the specialized companies, because they are widely used by lay people when searching solutions for problems with hard drives. In reality, it is very difficult to fix a hd, but it is perfectly possible to recover the information contained in it, using appropriate techniques and tools.
Among the components responsible for storing information on a hard drive, the highlights are the read heads and magnetic platters. Heads perform the conversion of electrical energy into magnetic (and vice versa) so there is reading and writing (bits 1 and 0) in the dishes. The logic boards are also very important because they contain circuits whose function is to control the entire operation of the hard drive.
Any action aimed at recovering hd damaged by physical problems, has a good chance of success if the professional familiar with its components and filesystem.
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