Just in case you can't run Scandisk in Win mode, create a floppy with a few tools, so that you can boot from it. I know for sure that Win98 can make one, it's in control panel, add/remove prog, last tab. When the floppy is done, check that it has scandisk.exe in it, change the little lock to protect it against writing, and reboot with the floppy. Now you'll be able to run scandisk.

However, I *think* that Crono is right.