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Difference between revisions of "Recovering bad data"
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Latest revision as of 16:57, 16 April 2006
One popular program for recovering bad data is SpinRite. This program works by turning off the disk drive's own data recovery technology and repeatedly re-reading each bad sector, with the hope that a good read may eventually happen.
The dd_rescue program can't recover from bad sectors, but it can skip around a disk and recover data that is still mostly good. dd_rescue reads the disk forwards until it finds an error; it then goes to the end of the disk and reads backwards. The aimage advanced disk imager implements a similar algorithm.