You are correct. I have a A2000/030. When booting and holding down the two mouse buttons, I get the early startup control screen. From there I select boot options but my CDROM drive does not show up as a bootable device.
I guess I'm going to have to figure out how to get CDFS installed first. My only problem is the two PC's that I own do not have PC floppy drives....
Regards,
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You can't boot from CD.
Like I said, under OS3.1 edit the CD0 file in Devs/dosdrivers, and change the device and unit number.
edit: 3.1 already comes with a cd filesystem. It's not great, but good enough to make an emergency startup disk for installing os3.9
Which controller do you have your CDROM connected to ?
After you changed the CD0 file and the CDROM is recognized, you can make an emergency-startup disk.