On 3/26/22 2:07 PM, Stan Johnson wrote: > ... > I'll simply note whether multiboot works on the Pismo > ...
Starting with this disk layout on the Pismo (as reported by pdisk in Mac OS X Tiger): ----- pismo:~ root# pdisk -l Partition map (with 512 byte blocks) on '/dev/rdisk0' #: type name length base ( size ) 1: Apple_partition_map Apple 63 @ 1 2: Apple_Driver43*Macintosh 56 @ 64 3: Apple_Driver43*Macintosh 56 @ 120 4: Apple_Driver_ATA*Macintosh 56 @ 176 5: Apple_Driver_ATA*Macintosh 56 @ 232 6: Apple_HFS Apple_Bootstrap 524288 @ 288 (256.0M) 7: Apple_HFS MacOS 1572864 @ 524576 (768.0M) 8: Apple_HFS MacOSX 14679777 @ 2097440 ( 7.0G) 9: Apple_UNIX_SVR2 Debian_sid 33554432 @ 16777217 ( 16.0G) 10: Apple_UNIX_SVR2 Gentoo 33554432 @ 50331649 ( 16.0G) 11: Apple_UNIX_SVR2 Void 33554432 @ 83886081 ( 16.0G) 12: Apple_UNIX_SVR2 swap 4194304 @ 117440513 ( 2.0G) 13: Apple_UNIX_SVR2 data 112806831 @ 121634817 ( 53.8G) Device block size=512, Number of Blocks=234441648 (111.8G) DeviceType=0x0, DeviceId=0x0 Drivers- 1: 23 @ 64, type=0x1 2: 36 @ 120, type=0xffff 3: 21 @ 176, type=0x701 4: 34 @ 232, type=0xf8ff ----- I left the Apple_Bootstrap partition as type Apple_HFS in case the current version of GRUB needs that and then installed Debian SID from the 2022-03-24 CD using a default installation with manual disk partitioning. The installation worked. Other operating systems were not detected (I realize this is a work in progress). After logging in to the new Debian installation, I see that the partition type of sda6 has been changed from Apple_HFS to Apple_Bootstrap (Mac OS X may have done that, though during installation I did choose to format sda6 as HFS and mount it at /boot/grub). I added the following line to /etc/default/grub so update-grub will probe for other operating systems: GRUB_DISABLE_OS_PROBER="false" As expected, running update-grub creates a new /boot/grub/grub.cfg file. Since the Apple_Bootstrap (HFS) partition is mounted directly as /boot/grub, it appears that grub-install doesn't need to be run. In fact, it looks like I could edit grub.cfg directly, though that would generally be a bad idea. The detection of other operating systems found 'Mac OS X (32-bit) (on /dev/sda8)' and 'Mac OS X (64-bit) (on /dev/sda8)'. Selecting the 32-bit entry resulted in this: error: can't find command `xnu_kernel'. error: can't find command `xnu_mkext'. Press any key to continue... Since GRUB on Intel 64-bit Macs also can't boot Mac OS X (at least I haven't found a way to make it work), I didn't expect it to work here right away, either, but there appears to be some progress (and fixing it here may also fix it for Apple x86_64). -Stan
