The only versions compatible with A500 that have inside the scsi.device are:
- 2.05 (37.300)
- 2.05 (37.350)
- 3.1 (40.63)
Ofc this scsi.device is meant for usage with IDE68k adapter that emulates A600's Gayle.
Every other version like A500+'s (37.175) or A600's (37.299) don't have the scsi.device inside alas you can't use HD's with these ROMS by default.
Theoretically you could use a bootable floppy disk with a startup-sequence that would use LoadModule to load scsi.device into memory and from that part (and after the reboot) if you had an HD installed it would boot
