I just thought I'd mention this: nt4 can actually boot to a large partition like 30 gigs fine. and for the longest time we never had any problems. but nt4 can only read the first 7.8 gigs of the hard drive while it is booting, so if it needs a certain file to boot, and that file somehow got moved out of the first 7.8 gigs of the hard drive, then you are screwed.