Quote:
Originally Posted by SneakySnake
 OMG OMG OMG OMG OMG OMG OMG
I NEED A TECH HEAD!  I HAVE JUST LOST A WHOLE DRIVE OF IRREPLACEABLE DATA. |
You might want to try out spinrite:
https://secure.wikimedia.org/wikipedia/en/wiki/SpinRite
It takes forever to run (sometimes up to several weeks) but might rescue your disc.
If it's a mechanical error you're probably out of luck:
Quote:
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if a hard drive's circuit board, drive motors or other mechanical parts are defective, or there is systemic file system corruption, SpinRite may be of little or no help[3]. In fact, in such circumstances no purely software-based solution would be sufficient to overcome the problem
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