A previous blessed ISO (Apr 17 2021) booted my IMac G4 without any troubles.
Then I just let all the defaults have their way with the machine, and wound up with a beautiful GRUB-booting system running debian 11 that has been running ever since. So there is no specific “G4” problem with GRUB…. Ken > On Mar 24, 2022, at 6:49 PM, Ben Westover <kwestover...@gmail.com> wrote: > > In case it's useful, here's the exact system I have: > https://everymac.com/systems/apple/powermac_g4/specs/powermac_g4_350.html > > It's running Open Firmware 3.1.1 (1.2f2 BootROM). This is what it came with, > and I was unable to find any upgrades online for this particular model. > > -- > Ben Westover