Q. How do I boot into OpenFirmware?
A. Hold down command-option-O-F at the boot chime.
Q. I'm stuck in OpenFirmware; how do I get out?
A. Type "bye", "boot", or "mac-boot" (depending on your machine)
A. ![[WWW]](/img/moin-www.gif){kind=small}
HW48: Booting after invoking the Open Firmware user interface
Q. Where is a list of commands for OpenFirmware?
A. Apple has a great series of tech notes that describe many of the commands of OpenFirmware and how to use them effectively.
- Tech Note 1061: Fundamentals of Open Firmware, Part 1 - The User Interface
- Tech Note 1062: Fundamentals of Open Firmware, Part 2 - The Device Tree
- Tech Note 1044: Fundamentals of Open Firmware, Part 3 - Understanding PCI Expansion ROM Choices for Mac OS
A. More information is also available at http://bananajr6000.apple.com/1275/home.html
Q. How do I reset the PRAM from OpenFirmware?
A. Issue the following commands at the OpenFirmware prompt (note capitalization):
- reset-NVRAM
- set-defaults
- reset-all
See also: AlwaysBootInto9