Long story, but I'm trying to restore my Mac Mini to it's original condition. I have the original 10.4.10 disc that came with the computer. In the time I have had it, it has had 10.5 installed and then 10.6. I've always been able to restore it from 10.5 back to 10.4. Now, it hangs at the "preparing disc" screen. Did 10.6 change the firmware? At the moment, I'm doing an erase/install of 10.5, and it seems to be working (hasn't hung yet). I'd really like to be able to use the original Mac Mini discs to recover from my experiments.