(Answer) (Category) Linux on PowerPC FAQ-O-Matic : (Category) MkLinux :
What options are availible for Mach?
As of 12/3/98 (courtesy David Gatwood):

Here are the ones that I know of:

A. switches
        -a      - Ask for additional info
        -c      - * collocate linux server (???)
        -e      - Expansion bay support (PB1400, deprecated)
        -s      - Single user
        -v      - cached console Video (deprecated)

* - this is really a linux server option that can be passed from
    lilo.conf, I _think_.

B. environment variables (the ones that seem valid for PPC)

        bmacplus                - can set bmac support to pretent a bmac
                                  is a bmac+.  Could be useful for iMac
                                  support, eventually, otherwise, not very
                                  useful.  :-)
        bus_speed_hz            - bus speed in Hertz, for clock speed.
        console_cache           - Improves video performance in X, but
                                  fails on x100 machines, and crashes on
                                  x100 AV machines.  (replaces -v)
        cpus                    - sets maximum cpus to use.
        max_wdunits             - allows you to disable high-numbered IDE
                                  busses if they're empty, such as PB3400
                                  with no CD-ROM.  Not necessary w/ PB2400,
                                  whose second bus is disabled in source.
        pb1400_expbay           - Expansion bay support (PB1400, replaces
                                  -e)
        scsi_nodisconnect       - sets DEV_NO_DISCONNECT flag...
        scsi_sync               - sets DEV_RUN_SYNC flag...
hollis@andrew.cmu.edu
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