Tim Fadden wrote: > Where does it say they are 3.5 in drives? I have two 5.5 inch 80 track 720k > drives. > > Just saying. :-) > Check the RPM setting for both drives. You can use the strobe pattern but if you need one, I can send you a program to measure the ROM setting. If the drives don't match, they won't read disks created on the other drive. Robert