On 10/04/2017 01:22 PM, John Paul Adrian Glaubitz wrote:
[...]FWIW, you can modify the script in /usr/bin/grub-installer while the installation session is running. Then you can make the necessary modifications until the installationworks by just selecting the GRUB option from the menu item.
Hey Adrian, you are really helpful! :-) I will check this out for the Power Macs and try to fix any issues on the way by directly adapting `/usr/bin/grub-installer`. But could take until the weekend to find the time. :-/ I'll keep you informed.
Cheers, Frank