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.
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Commands |
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eject cd |
Ejects a stuck CD |
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reset-all |
Resets the computer to defaults. |
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reset-nvram |
Resets non-volatile RAM to default settings. |
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mac-boot |
Continue the boot process. |
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shut-down |
Shutdown the system. |
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bye |
Exit Open Firmware. |