Quick&Dirty Boot Instructions for ROCK Linux on RS/6000 B50
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Enter the OpenFirmware (can be done with F8 on startup). The RS/6000
BIOS calls the OpenFirmware prompt the "OK Prompt". Boot the kernel
from a floppy with:

  boot floppy:,<filename> <kernel-options>

e.g.:

  boot floppy:,zimage root=/dev/discs/disc1/part3

Note that 'floppy' is a device-alias.

Other useful commands:

printenv     shows the current contents of the variables
dev / ls     shows the device tree
devalias     shows the device aliases and the OpenFirmware pathnames

setenv variable value    set the content of the variable
reset-all                restart the machine
shut-down                power off the machine