Yaboot is a bootloader for PowerPC computers (NewWorld PowerMacs and IBM CHRP).
It loads a Linux operating system kernel from an OpenFirmware-accessible
filesystem and initiates operation of the kernel. On PowerMacs, an included
CHRP script can display a multi-OS boot menu which can launch
yaboot or other operating systems. Utilities are included to
place yaboot and the associated script on a non-mountable
bootstrap partition.