I have an Apple //c with orig ROM. I have done the bootstrap via serial cable to my G4 laptop by way of USB - serial connector, and successfully pushed over .DSK images. After amking three or four disks, I now get an I/O error on the //c. it will not read or write any disks at all. I have read that this *could* be caused by an erratic disk drive speed. What is the best way to adjust the drive speed? Could the problem really be indicative of a bad disk drive altogether?