I just obtained a ROM3 IIgs with 2M of total RAM. Included were 2 3.5" drives and a 5.25" drive (I believe I will need a separate controller for the latter). The 3.5" drives are A9M0106s, as I believe were standard with the IIgs.
Included was a motley assortment of IIgs disks, labeled on the disk shell with Sharpie. Two system disks were included. I've been trying to duplicate them with no success.
I can see two ways to do this on the IIgs after initializing a blank diskette:
1. Drag the system disk icon on top of the new disk icon, which apparently does a block copy, The resulting disk will start to boot, but crash into the monitor almost instantly.
2. Drag the files from the system disk into the new disk. The resulting disk gets much further in the boot process, but then generally either crashes into the monitor, or displays an error message saying there's not enough RAM to load the Finder.
After either type of copy operation, a "Verify" procedure always returns no errors.
I disassembled both drives, blew out the dust, and cleaned the heads with alcohol. This made me feel better but did not change anything, sadly-- the symptoms are the same as before.
Perhaps I am using the wrong type of diskette? I have a bulk pack of black "one hole" disks, but I noticed the drives have microswitch sensors for the second hole normally seen on 1.4M HD diskettes.