Brian, have you checked with the manufacturer?

Floppy drives are so seldom used they tend to collect dust from the system fans drawing air thru the case. The dust will prevent a disk from being read as well as transfer dust inside the floppy sleeve when a disk is inserted. It is best to always blow out a floppy drive b4 you use them. I am not sure but a little gentle air from one of those "air cans" may help clear the dust from a floppy disk. If the disk is "dead" it can't hurt anything to try...