one thing that happened a long time ago was the flppy drives getting out of alignment. In this proces, all your ner disks formatted over worked fine, but your older disks didnt work. this is why back in the day i had to switch to pc, nobody in the area could fix the floppy discs in wilmington NC, and the cost to get the shipped or newer ones ordered was too high, than this was in '94. Major bummer.
