Hold down the Command-Option-O-F key combination on a Mac keyboard, though the Option key is sometimes marked as Alt - with a symbol/icon below it, or press the Win-Alt-O-F key combination on a PC Windows keyboard while booting the machine. Output texts in these examples have been truncated in most cases to show only the information of interest. The examples were tested on PowerPC Macs, but may also work under bPlan machines to some extent. This tutorial focuses on useful tips and tricks when using the user interface by way of specific examples. Open Firmware uses a Command-Line based user interface, which can be used to control booting and other processes. The Pegasos, Pegasos II, and Efika also have an Open Firmware based hardware implementation, but with small differences to Mac firmware. Open Firmware ( OF) is a computer firmware system, similar to the BIOS on a PC, found in all MorphOS compatible Macs.
