Description of problem:
On Mac G5s, all of the F21 netinst disks enter grub2's rescue mode instead of displaying the grub menu.
Version-Release number of selected component (if applicable):
PPC64 Beta RC1 and before
Steps to Reproduce:
1. Start Mac G5
2. Insert netinst CD
3. Hold down C to start "boot from CD" mode
4. Wait for CD to complete boot sequence
Entering rescue mode
Display of grub2 menu, allowing install or rescue mode.
All F21 netinst CD isos behave the same.
F21 DVD is not recognized as bootable. That's a separate issue.
For F20, netinst CD had different issues
- CD boot/powerpc-ieee1275 directory was not blessed
- core.elf file in that director needed to be set to file type "tbxi"
I have followed the same procedure as Eric Larsson with the F21 Beta CD, but it made no difference. HFS utilities don't appear to provide way to display if a directory is blessed, but did so. Did verify that core.elf had correct file type.
It appears to be a new problem - perhaps a problem with grub2 not being able to access the grub.cfg file?
I have plenty of Mac G5 hardware and fibre net connection so can easily do any testing for this.
Blocking the ppc64 tracker bug.
Sorry for the misfires on the blocker bug.
Moving to lorax.
There is a separate issue that grub2 is being used for Mac stage 1 boot, but there is a dangling usage of yaboot for Mac stage 2 boot. Unfortunately, yaboot is not provided on the F21 iso.
I created the separate https://bugzilla.redhat.com/show_bug.cgi?id=1162914, to document this gap. When creating that BZ, I noted that bcl is migrating RHEL 7.1 from yaboot to grub2 (https://bugzilla.redhat.com/show_bug.cgi?id=1131199)
under lorax. I suspect that component may be a better starting point.
Hopefully it will be possible to resolve the F21 grub2 stage 1 boot issues and do some quick resolution of the stage 2 yaboot issue (likely ppc64 -m32 build with static glib), to be migrated to grub2 stage 2 in F22 timeframe. This would allow grub2-only boots in F22 and RHEL 7.1 releases.
We're not going to pull yaboot back in. And AFAIK the current setup works fine on power7 ppc64 systems.
I don't think G5 is really a high priority at this point, but can you be more specific about why you think it is failing on the G5?
*** Bug 1162914 has been marked as a duplicate of this bug. ***
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