After learning from the Development team that my old AMD K6II 500MHz test system is too old to run TI 9, I decided to get rid of it and "upgrade" to an HP Pavilion Pentium 4 1500MHz test bed. When I tried to boot it with the TI 9 (Buld 2337) Recovery CD into Full mode, the system just hung. That was a bit of a disappointment, but retrying and pressing F11 so that I could edit the command line to "quiet acpi=off noapic" (without the quotation marks), allowed TI 9 to run normally in Full mode. I was able to create a backup and verify it. OK, so what does this command actually do? Can anyone explain?