What worked for me on a Cube G4 was the following (based on Joshua's advice): The alias will be resetted to default at the next cold boot and thus you will have to repeat the procedure for every USB-boot. You can just choose a default kernel entry - *finnix in my case - and it will boot properly. on the ISO)ģ.) Quick and dirty workaround: overwrite the cd alias in OF with the path to your USB Key (copy the path from the ud alias): devalias cd Now boot with boot cd:2,\\yabootĥ.) No problem anymore with hardcoded cd alias - it's now poiting to your USB Key. (the cd alias is hardcoded inside files like ofboot.b, nf. This ud alias maps to You can call yaboot with boot ud:2,\\yaboot - but then the kernel will panic because it still searches his initrd + rootfs somewhere at cd:2,/. I used the finnix ppc rescue ISO, dumped with dd to the usb key.ġ.) OF creates the devalias ud for the usb key in the left port. On a Powerbook G4 A1138 (1,67 Ghz 15" late 2005) the above instructions didn't work out of the box. Others, like resetting SMC and NVRAM, are no longer needed on the latest Macs.This thread is old, but i want to add some information that may be useful:
Some of the more advanced options, like Verbose mode, are now hidden away. Target Disk Mode: go to the Recovery menu and select Share Disk.Set a Default Startup Disk: select your disk as above, then hold down the Option key and click Always Use.Startup Manager: all your bootable disks will be displayed in the startup options screen, so just pick the one you want.Safe Mode: select a volume, hold the Shift key, and click Continue in Safe Mode.
This will launch the macOS recovery mode, from where you can access some of the other boot modes, including:
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