What filesystem type does it use for root/boot/whatever?

Install operating system "X" that supports that filesystem type in the virtual guest, create a new disk, newfs/mkfs it, arrange the bits from the tape, take the newly-assembled disk and move to another VM and try to boot it.

Not remembering anything about how SVR3.2 boots (I think that's what Opendesktop is?) that's the end of my help on the

subject :)