On Aug 17, 2016, at 10:28 AM, Evan Koblentz via vcf-midatlantic <vcf-midatlantic@lists.vintagecomputerfederation.org> wrote:
The option key at boot time should bring up a boot menu.
Failing that, control open-apple O F at boot time should get you to open firmware, from there you can type "boot cdrom"
This is all from memory - it's been a while since I worked on a Mac like this. Could be wrong.
It goes right into Debian no matter what I press.
Should be cmd-option-O-F to enter Open Firmware; at the prompt, enter "bye" to do a normal ROM boot ("boot cdrom" will work on newer Open Firmwares as well). From there, if you have a bootable OS X CD/DVD in the drive (assuming you have a working drive, which is not guaranteed), you should be able to force boot that by holding "c". You should also be able to hold down Option during boot to bring up a boot menu, though that was always a bit temperamental. - Dave