Hi Stuar
On Fri, 2025-04-11 at 15:16 +1200, Stuart MacIntosh wrote: > I run a couple of old Xserve G5s (RackMac3,1) and they have all failed > to reboot following an "apt-get dist-upgrade", which I normally do every > month. Installing grub-ieee1275 (2.12-7) seems to have been what did it, > or maybe it was the kernel, I don't know. The machines drop to the OFW > console with an "invalid memory access error" instead of booting. Sounds like an incompatibility with the current grub-ieee1275 on Apple PowerMac. > Manually booting such as with "boot hd:,\\grub" returns a "CLAIM failed" > error. I'd be grateful for any troubleshooting tips. > > Has anyone else run into this issue? Should I try rebuilding grub and/or > the kernel myself? Not yet, but I haven't performed a dist-upgrade on my PowerBook G4 yet which I am using for these tests. I will try to do that over the next days and see if I can reproduce this. > An excerpt from the OFW console is attached. I even checked the space > weather because for 3 machines to fail at once like this, it's either > software or a solar flare :-) I think it would be wise to report this to the grub-devel upstream mailing list [1] and see if you can get any feedback. The background is that Debian backports upstream changes from time to time and I could imagine that some of the recent PowerPC-related changes may have broken your machine. Do you happen to know what the last working grub-ieee1275 version was? Adrian > [1] https://lists.gnu.org/mailman/listinfo/grub-devel/ -- .''`. John Paul Adrian Glaubitz : :' : Debian Developer `. `' Physicist `- GPG: 62FF 8A75 84E0 2956 9546 0006 7426 3B37 F5B5 F913
