Instructions contained in the BootROM for initializing the startup process and keeping system configuration information. Much can be done via zapping the PRAM.


Accessing Open Firmware

Hold down Command+Option+O+F at system startup - not at restart.

Commands


eject cd

Ejects a stuck CD

reset-all

Resets the computer to defaults.

reset-nvram

Resets non-volatile RAM to default settings.

mac-boot

Continue the boot process.

shut-down

Shutdown the system.

bye

Exit Open Firmware.