When I Initialize a floppy disk quite a lot wont and say they have bad sectors.
I haven't had that bad a percentage with old floppies...
It could be they are bad, but I wonder what shape your drive is in?
Might not be the issue, but at least, I'd consider cleaning the floppy drive.
I've seen bad/dirty floppy drives kill more disks than actual bad disks..
(Of course, if the floppies were stored somewhere moist and developed some rot, a lot could be bad. In that case, they can gunk up your drive and make other floppies bad..)
Just throwing that out there..
desiv
