Hi Alex
If the disc won't spin this won't help, but if it runs in a PC look at
"Spinrite"
http://www.grc.com/default.htm
You create a bootable floppy disc or CD so it is OS independent. There are a
lot of genuine testimonials and I can vouch for the expertise and integrity
of the author (who is also a security expert and does a highly regarded
weekly podcast
http://www.grc.com/SecurityNow.htm#116)
Russell Gadd