Hi Folk,

I have vague memories of a youtube video with details of setting up an external drive (firewire i believe) to boot and install different versions of OSX/macOS.

I am not sure it's specific to the PPC or will work on both PPC and Intel.

Does someone have useful links on how to create a tool like this?

Regards


Randall Crook.

I think you can do it with just Disk Utility's restore functionality. The PPC/Intel cross-over will be limited by which Intel systems (if any) support booting from Apple Partition Map drives. I don't think OpenFirmware on any PPC Macs support booting from GPT partitioned drives. Carbon Copy Cloner might make it a little easier.
Basically, split the drive into a bunch of smaller parts & clone over the installers into partitions. Older versions of OSX would let you install and run from external drives without any extra effort. Monterey seems to fight you if you want to do anything non-standard, like install on another Mac over target disk mode.