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There are a host of reasons why a computer user may experience data loss crashes, corrupted hard drives, server failures and simple human error.
If the original data loss was down to a problem with the computer's operating system, then it is usually fairly easy for a data recovery professional to access the system and extract the information in question, usually by copying it to another disk. However, a failed or corrupted hard drive is a trickier problem and data recovery in this case often has to involve making repairs to the file directory or using specialised software to retrieve the data. Occasionally, the disk itself will need to be replaced.
Given the risks inherent for individuals and businesses in tampering with hard drives and servers, the vast majority of people opt for a professional data recovery service for all but the most simple data recovery tasks.
A professional service will first mount a close inspection of a damaged hard drive for physical damage, using a microscope. The electrical components of a drive such as its power unite, motor, servo circuits and interfaces will also be scrutinised, along with its electronic functionality. If any of these components are faulty, they will be repaired or replaced, before the hard disk itself is reprogrammed, recalibrated and upgraded.
The magnetic media will be subject to a similar inspection, with technicians looking at the functionality of the read/write heads and making sure that all are correctly aligned. Again, any faulty components will be replaced, before the hard disk drive heads are re-aligned and contamination removed. The drive will then be cleaned under laboratory conditions and re-assembled.
Once the disk is fully repaired, it will be possible to access the lost data. Any information stored on the magnetic platters will be extracted or read via the hard disk drive interface using proprietary programs.
The data stream itself will be checked for parity errors and any bad sectors will have their CRC codes repaired, before the data and file lists are stored securely on the company's servers.
Technicians then examine the file listings and data manually, calling on the client to provide assistance when needed to validate the data for errors. Once validated the data is transferred onto DVDs or a replacement hard disk drive.
The original disk drive is retained for a short time after the data recovery operation in case of any subsequent problems, before securely erasing any data contained therein.
Disclaimer: All information on this site is provided for informational purposes only! By no means is any
information presented herein intended to substitute for the advice provided to you by any health care or other professional
or organization.
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