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. |