I'm using the custom ROM that the ROMinator ships with. I know for System 7.5 and above you have to edit the "gusd" resource in the system folder to allow booting with the ROMinator. I wonder if there's a similar fix for A/UX?
Have been wanting to run A/UX 3.0.1 on my newly upgraded SE/30 but it seems to freeze upon booting. Anyone else have any luck booting A/UX with a ROMinator installed?