On 10/22/25 18:04, Mike Katz via cctalk wrote:
I just purchased an old Gimix computer (now if only I can get it from
Orlando to Chicago before my friend goes down there for Christmas).
It has an OMTI 20C-1 MFM hard disk controller with a IMI 5018 19MB hard
disk drive in it.
I am thinking of trying to upgrade the hard drive. The Gimix System
that I worked on had a half high 20MB drive and a Syquest removable 5MB
drive.
Does anyone have an old MFM drive laying around (half high or full
height but larger than 18MB) and/or an MFM removable cartridge drive
with cartridges?
Pretty sure Mr Gesswein is on this list but I don't see him post often.
Anyway, he designed a very handy MFM drive emulator:
https://www.pdp8online.com/mfm/mfm.shtml
I won't be buying any more MFM drives, and like Jim said, the ones I
have I wouldn't trust enough to ship. With an inexpensive emulator
available that's one piece of history I won't miss at all.
Doc
