Following a recent refererence to the dread Oofy at a LUG meeting and after looking at a couple of Intel PC type machines using this boot method I am pretty well totally baffled. The people of Arch however know it all. Or as much as can be known. https://wiki.archlinux.org/index.php/Unified_Extensible_Firmware_Interface#M... I seem to have a vague recollection that Sun once used Ooofy. And Apple of course was an early adopter. Or am I thinking of Open Firmware? Somewhat related. Hmmm. https://en.wikipedia.org/wiki/Unified_Extensible_Firmware_Interface https://en.wikipedia.org/wiki/Open_Firmware