I have used a program called Spinrite from Gibson Research for years.  Depending on exactly what the fault was, it may be able to repair the problem.  It can take a very long time to run on a bad drive.  I believe you can still download a full copy for a limited time trial at http://www.grc.com if I remember correctly.  That is also the home of ShieldsUp someone mentioned recently.

Hmmm, I just went to the site and it looks like version 5 may be available for free but I did not find a trial thing for version 6.  BTW, version 6 is far from new.  Steve has been promising an upgrade to 6 for years but seems to have too many other projects to get it done.  I suspect that is because he is old like me.  :)

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