I'll have to wait until tomorrow night to try and build the disk in the MKll first.

Good idea. That should work. Run the builder with the drive in a Mk2, reapply the mk2 developer upgrade while it's still in the Mk2 so you don't fry whatever disk you plug into the Mk2 afterward, then plug it into the Mk1 and apply developer Mk1 onto it on its first powerup. Tricky, but I think it'll work.

Mark, that was a quick diagnostic. Cool. Nice catch.

Does this not bode well for the Mk1 in terms of upgrades? Or could code tweaks to the mk1 version of the builder image take care of it? As I recall, the builder images are going to need an update to allow bigger than 127gb anyway, maybe we can bribe the right people with curry and/or beer?