Data Recovery
Recovering Lost Data.
Data recovery is the process of salvaging data from damaged, failed, corrupted, or inaccessible secondary storage media when it cannot be accessed normally. Often the data are being salvaged from storage media formats such as hard disk drives, storage tapes, CDs, DVDs, RAID, and other electronics. Recovery may be required due to physical damage to the storage device or logical damage to the file system that prevents it from being mounted by the host operating system.
Recovery techniques
Physically damaged hardware- Some damage can be repaired by replacing parts in the hard disk. This alone may make the disk usable.
Hardware repair-Examples of physical recovery procedures are: removing a damaged PCB (printed circuit board) and replacing it with a matching PCB from a healthy drive, performing a live PCB swap read/write head assembly with matching parts from a healthy drive, removing the hard disk platters from the original damaged drive and installing them into a healthy drive.
Disk imaging-The extracted raw image can be used to reconstruct usable data after any logical damage has been repaired.
Recovery software
Data recovery cannot always be done on a running system. As a result boot disk, Live CD, Live USB, containing a minimal operating system and a set of repair tools are used.
source wikipedia
Data recovery is the process of salvaging data from damaged, failed, corrupted, or inaccessible secondary storage media when it cannot be accessed normally. Often the data are being salvaged from storage media formats such as hard disk drives, storage tapes, CDs, DVDs, RAID, and other electronics. Recovery may be required due to physical damage to the storage device or logical damage to the file system that prevents it from being mounted by the host operating system.
Recovery techniques
Physically damaged hardware- Some damage can be repaired by replacing parts in the hard disk. This alone may make the disk usable.
Hardware repair-Examples of physical recovery procedures are: removing a damaged PCB (printed circuit board) and replacing it with a matching PCB from a healthy drive, performing a live PCB swap read/write head assembly with matching parts from a healthy drive, removing the hard disk platters from the original damaged drive and installing them into a healthy drive.
Disk imaging-The extracted raw image can be used to reconstruct usable data after any logical damage has been repaired.
Recovery software
Data recovery cannot always be done on a running system. As a result boot disk, Live CD, Live USB, containing a minimal operating system and a set of repair tools are used.
source wikipedia
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