The problem with that operating range is that it includes the HD-20 which was essentially the same mechanism used in the HD SC. And pre-'85 there wasn't much, particularly in the 3.5" arena.
Come-on Charlieman what's the worst that could happen? I have read that the earlier drives must be formatted in whatever position the drive is to be operated,however.
Come-on Charlieman what's the worst that could happen? I have read that the earlier drives must be formatted in whatever position the drive is to be operated,however.