(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. This thread is old, but i want to add some information that may be useful: