I'm glad I asked this just for bbraun's explanation of a booting Mac! Wow, I had to read it twice before I got half of it :I ...

Anyway, I'm really interested in this. I'm gonna try removing that check like bbraun suggested. As for the ROM patches, why exactly are they needed? Can't the system just say "Oh, well this machine doesn't exist in my ROM patch table, so I'll just not do any patching"? Or, if it really has to patch, then we can put in a Performa 475 ROM patch, can't we??? (Although, I'm not sure if sys6 will manage that patch.)