Gotta love those open source guys :-)

When running the ybin -v utility to update the boot menu on my iBook, I got the following output:

ybin: Finding OpenFirmware device path to `/dev/hda6'...
ybin: Finding OpenFirmware device path to `/dev/hda3'...
ybin: Installing first stage bootstrap /usr/lib/yaboot/ofboot onto /dev/hda6...
ybin: Installing primary bootstrap /usr/lib/yaboot/yaboot onto /dev/hda6...
ybin: Installing /etc/yaboot.conf onto /dev/hda6...
ybin: Setting attributes on ofboot...
ybin: Setting attributes on yaboot...
ybin: Setting attributes on yaboot.conf...
ybin: Blessing /dev/hda6 with Holy Penguin Pee...
ybin: Updating OpenFirmware boot-device variable in nvram...

Got to love these guys, this is better than the famous cpu on fire thing way back! Get yourself a PPC machine just for this ;-)