Hello, On 6/1/23 11:56 PM, Linux User #330250 wrote: > On 06/02 2023 06:25 Ben Westover wrote: >> It turns out that adding &device; alone is not enough since it refers to >> only the drive and not the partition along with it. &device;:&partition; >> is what was actually needed. Fixed script is attached. > > > Wow. Thanks. On my Power Mac G5, &device; alone always worked. Strange. > > One thing that concerns me a bit is putting Linux's CHRP boot script > into /System/Library/CoreServices/BootX, which is specific to Mac OS X. > Why is this necessary? > ...
It's /boot/grub/System/Library/CoreServices/BootX, probably necessary to make "blessing" work. > To me it makes sense to not copy what other OSes do. So, for Linux I use > more than one partition as it has always been the way, even on x86. > That's why, for my installations, I create an Apple_Boot (or > Apple_Bootstrap) partition just for Linux. It has my "stage1", my CHRP > boot script (along with a shiny icon) and my GRUB along with my initial > 1st stage GRUB configuration. Why do I prefer this? Because now, the > CHRP script will be able to rely on &device; (and &partition;) to > identify itself, while I use GRUB on this partition to find my actual > Linux boot partition (which may or may not be the same as the root > partition). This is possible because GRUB supports finding partitions > and (Linux) filesystems based on their UUIDs rather than specifying > fixed disk/partition numbers. AFAIK GRUB supports a wide range of > filesystems, including ext2/3/4, HFS, HFS+, VFAT, exFAT, btrfs, ZFS, and > XFS. So my Linux root / and my Linux boot /boot can be on a partition of > any of those filesystems and GRUB will find it based on the UUID I have > it look for. ... IMO, the most important benefit of having an Apple_Bootstrap partition is that it can't be trashed easily in Mac OS 9 or Mac OS X since it doesn't show up on the Desktop. I find the default use of UUIDs in GRUB (and elsewhere) irritating, since it makes restoring filesystems (or copying them to other systems) more difficult. Luckily, UUIDs aren't really unique; an old UUID can be re-used when a new filesystem is created. On systems where I use GRUB, I generally disable the use of UUIDs or keep a known good grub.cfg that uses LABELs or real paths instead.
