In case anyone needs them, I believe I still have a small quantity of low-density 5.25" floppies, the kind that format to 360KB under PC-DOS 1.1 or later. I assume they will also work for 160KB/320KB under PC-DOS 1.0, with appropriate taping, notching, etc. I keep them around for the drive on my Compaq Portable II. -Shel