You can install GRUB instead of Yaboot if you go back to the main menu. The GRUB installation menu item comes right after Yaboot.
Try to run it after partioning manually and let me know what you get. You may have to manually mount the HFS partition to /target/boot/grub from a shell. Adrian PS: On mobile, please excuse my posting style. > On Oct 1, 2017, at 11:00 AM, Rick Thomas <rbtho...@pobox.com> wrote: > > Adrian and Milan, > > Thank you for the explanations. It’s much clearer to me now! > > I did a couple of experiments today. > > 1) I did a test installation with manual partitioning using the 20170927 > installer (Debian GNU/Linux 9.0 _Sid_ - Unofficial ppc64 NETINST > 20170925-19:46). I created a 10MB bootstrap HFS partition and a 250MB /boot > ext2 partition. It had no problem installing yaboot to the 10MB HFS > partition, and no trouble booting from it using that yaboot. So we can say > that it is possible to use an HFS partition as large as that with yaboot. > Whether it works with grub2 is a question for another day. > > 2) I did an installation with Adrian’s latest install image (Debian GNU/Linux > 9.0 _Sid_ - Unofficial ppc64 NETINST 20170930-18:36). I chose “guided - use > whole disk with LVM”. As expected, it created a 1MB HFS bootstrap position > and a 250MB /boot (ext2) partition. I chose a minimal system with ssh. All > went well and it installed yaboot. I did not see a chance to install grub2 — > is that expected? It rebooted fine using yaboot. So all is well on that > front. > > Hope it helps! > Rick