On 4/18/19 00:26, John Paul Adrian Glaubitz wrote: > On 4/18/19 12:06 AM, Frank Scheiner wrote: >>> My guess is an update broke something, because I don't remember >>> successfully rebooting after that, but I'm not sure. >> >> Sad to hear that. Doesn't `boot hd:2,\grub` work - assuming you have a >> single disk drive in your G5? >> >> What does `printenv boot-device` give back? > > It might be that the grub2 update triggered another update to the bootloader > which failed because the wrong "ofpathname" was used but that has to be > tested.
Yeah, I'm afraid it sounds like that. If it's just a wrong OF path in `boot-device`, the above boot command should at least get Noah back into the installed OS, from where he could "repair" things using `nvsetenv` with `ofpath`, i.e. the following should correct the `boot-device` NVRAM var for the time being: ``` nvsetenv boot-device "$( ofpath /dev/sda2 ),\grub" ``` UPDATE: I just did an upgrade on my G5 and indeed, the `boot-device` NVRAM var is wrong afterwards. Looks like a complete `grub-install` run is done with every GRUB upgrade, which invokes `ofpathname`, which gives back a wrong device to OF path translation: ``` root@powermac-g5:~# nvram --print-config=boot-device /ht@0,f2000000/pci@9/k2-sata-root@c/@0/@0:2,\grub root@powermac-g5:~# apt upgrade [...] Setting up grub2-common (2.02+dfsg1-17) ... Setting up grub-ieee1275-bin (2.02+dfsg1-17) ... Setting up grub-ieee1275 (2.02+dfsg1-17) ... Installing for powerpc-ieee1275 platform. /usr/sbin/ofpathname: line 812: warning: command substitution: ignored null byte in input Installation finished. No error reported. Generating grub configuration file ... Found linux image: /boot/vmlinux-4.19.0-4-powerpc64 Found initrd image: /boot/initrd.img-4.19.0-4-powerpc64 done [...] root@powermac-g5:~# nvram --print-config=boot-device /ht@0,f2000000/pci@9/k2-sata-root@c/scsi@0/sd@0,0:2,\powerpc-ieee1275\core.elf ``` Also interesting: the file and path have changed from the GRUB version on the installer ISOs I used the last time (`\\BootX` => `\powerpc-ieee1275\core.elf`). As expected the following command line "corrects" it: ``` root@powermac-g5:~# nvsetenv boot-device "$( ofpath /dev/sda2 ),\grub" root@powermac-g5:~# nvram --print-config=boot-device /ht@0,f2000000/pci@9/k2-sata-root@c/@0/@0:2,\grub ``` ...for now. **** @Adrian, Mathieu: We could use this opportunity to evaluate Mathieu's patches from [1] and [2]. This will also require changes to `grub-install`, but in the end could be the "best" solution as `grub-ofpathname` would be included in the GRUB packages. [1]: https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=916830 [2]: https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=916864 Cheers, Frank
