This script is deprecated in favor of a much nicer and more robust script ofboot, see README.ofboot for more information. This script was written by Benjamin Herrenschmidt, I added a X to the OpenFirmware pathnames, you should replace that X with the proper partition number. for the MacOS line add the partition number of your MacOS partition, for the yaboot line add the partition number of your bootstrap partition, which should be the same partition you configure ybin to install on. Remember that the Mac partition table is considered a partition in and of itself, so partition number 1 is always the partition table. If the disk is shared with MacOS it needs to have a MacOS disk driver partition in which case the first `real' partition will probably be number 4. Edit this script before running ybin or mkofboot. If you have G4 hardware then your OpenFirmware may already have a graphical boot selector built in, this selector can be accessed by holding down the option key when booting the machine. You should see a screen with buttons for each bootable partition. This version of ofboot.b includes a badge icon, the button with a penguin icon is your bootstrap partition. If you decide to use this built in selector you really do not need to use dualboot.chrp. Thanks to Nicholas Humfrey for creating the Badge icon.