Ahhh...I finally sorted out the scsi patch instructions.
I was going nowhere for a while. I have my patched scsi.device 43.45 in devs: now.
I have already inserted
C:ACAtune -maprom * early in my startup sequence and it still boots okay in WinUAE.
I have commented out all of the other OS 3.9 scsi checks and then inserted the following:
C:LoadModule >NIL: DEVS:scsi.device NOREBOOT right before
C:Setpatch SKIPROMUPDATES "scsi.device" QUIET which was already there.
I rebooted and I get an error saying C:loadmodule failed returncode 10
I double-checked and scsi.device is definitely sitting in DEVS:
Perhaps I am not doing things in the correct sequence?