I've finally managed to boot to the NetBSD 3.0 install CD on my O2.
It's a 200MHz R5k
But as soon as I boot to the CD, the Kernel Panics and it tells me
that it only supports a serial console!
Some googling has lead me to this
<http://www.wenks.ch/fabian/NetBSD-SGI-O2.txt> which makes me believe
that I'll need to use a null-modem cable to get a serial console so
that I can install NetBSD. Is this true? Or is there some env variable
I can change? My printenv is thus:
     >printenv
     AutoLoad=Yes
     console=g
     diskless=0
     dbaud=9600
     volume=80
     sgilogo=y
     monitor=h
     TimeZone=PST8PDT
     netaddr=192.0.2.1
     crt_option=1
     SystemPartition=pci(0)scsi(0)disk(1)rdist(0)partition(8)
     OSLoadPartition=pci(0)scsi(0)disk(1)rdist(0)partition(8)
     OSLoadFilename=/unix
     OSLoader=sash
     ConsoleOut=video()
     ConsoleIn=keyboard()
     cpufreq=200
     eaddr=08:00:69:02:af:53
     gfx=alive
     videostatus=illegal_env_var
Lastly, IRIX 6.5 is already installed and working on this machine -
which I aquired as a gift from my uncle who got it from "work" (GE)
which has used it for CAD (I assume).

Thanks for the help!