[lug] Checking hard drive for errors?

[Robert George Mayer]

I am looking into a problem where the password file on a laptop has been
corrupted
twice.  I am trying to rule out a problem with the hard drive.  Does anyone know
of
software to do nodestructive testing of the medium itself, checking for bad
blocks?
Any other suggestions welcome, as well.

Thanks.

- BOB

-- 
                       Robert George Mayer
          370 Canyonside Drive  Boulder, Colorado 80302
              303-444-2548            mayer at acm.org