[net.micro.pc] Need help with PC-DOS 3.1 bad cluster allocation

chapman@mir.berkeley.edu (Brent Chapman) (02/04/86)

I use an AT, with a 20M disk, running DOS 3.10.  I have been
experiencing problems with DOS's handling of bad clusters
on the disk.  PC-TOOLS showed two bad clusters on the disk when
it was formatted, before any files were copied onto it.  Now,
however, it appears that DOS has allocated right over the top
of one of those two bad clusters.  

Has anyone had any experience with this type of problem?
Can anyone suggest any solutions?  I'd like to be able to mark 
these clusters in some way and prevent DOS from allocating them.
I could simply create a file that is made up of these two bad
clusters, then hide the file, but when I did a backup/restore,
that would because the file would be restored to an arbitrary
position on the disk, and something else would be written over
those bad clusters.  Any other ideas?


Thanks!

Brent Chapman
chapman@miro.berkeley.edu
ucbvax!miro!chapman