[agentb]

Ian Mapleson wrote a guide on how to do it, you'll find it on his sgidepot website.

Thanks -- is this the link you were referring to? (I couldn't find anything more specific about installing VPro software)
Installing IRIX 6.5
http://sgidepot.co.uk/6.5inst.html

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I found this other post which covers what I'm looking to do:
http://forums.irixnet.org/thread-117.html

Though regarding booting to miniroot, I don't have a SCSI CDROM -- suggested alternative? I've got a linux machine, Raspberry Pi, SCSI2SD.

Or can I use the "Install System Software" option and then install over a network connection?

Sorry for the basic questions, I'm just getting into working on the Octane. Previous owner had freshly installed 6.5.22f.