bluethunder
Experienced Member
For a couple months, I've been fighting to get my old H-89 back to life. I could not get the FD-100's or spares working properly to save my life. Some wouldn't read, some wouldn't write. Some would sort of work, and fail past track 30.
I cleaned the heads with isopropyl, lubed the step worm gear, and swapped the felt from dead drives into the mostly working ones. Even found some NOS 10 hard sectored disks.
Low and behold, standard PC 360k DSDD drives work fine in it.
I had a couple TEAC 360k drives that came in an external floppy enclosure that was freecycled to me.
The Jumpers lined right accross with my reference for the Heath drive set up, HS, DS0, DS1, DS2, HM. Once those jumpers were set, the drives worked right out of the box.
Booted off of the CPM distribution disks, was able to format new and old media.
Even able to create new disks from the H89LDR images.
I was always under the impression, that the drives were proprietary design, or of a type that was only available in the 70s or 80s. Especially considering that this is a hard sectored system, so I thought the drives had to be set up for that.
So, if you have an old CPM computer with hosed drives, with a little research, you might be able to swap in a cheap and available 5 1/4 PC floppy.
The other bonus is, I can hook up these drives now, to a PC, and use better diagnostic software and the manuals to try and repair them.
I cleaned the heads with isopropyl, lubed the step worm gear, and swapped the felt from dead drives into the mostly working ones. Even found some NOS 10 hard sectored disks.
Low and behold, standard PC 360k DSDD drives work fine in it.
I had a couple TEAC 360k drives that came in an external floppy enclosure that was freecycled to me.
The Jumpers lined right accross with my reference for the Heath drive set up, HS, DS0, DS1, DS2, HM. Once those jumpers were set, the drives worked right out of the box.
Booted off of the CPM distribution disks, was able to format new and old media.
Even able to create new disks from the H89LDR images.
I was always under the impression, that the drives were proprietary design, or of a type that was only available in the 70s or 80s. Especially considering that this is a hard sectored system, so I thought the drives had to be set up for that.
So, if you have an old CPM computer with hosed drives, with a little research, you might be able to swap in a cheap and available 5 1/4 PC floppy.
The other bonus is, I can hook up these drives now, to a PC, and use better diagnostic software and the manuals to try and repair them.