<Didn't the Kaypro use 1K sectors? ...and why do I have the impression tha No unless you were using the Advent turborom. <the Kaypro had a WD 1770 or 1772 (28-pin) FDC on it? I used to swap disks <with the AMPRO which was like this all the time. It's been a long time <though . . . The part used was a 1793 or the same part with a japanese part number(8873 I think). Allison