I have used a 320GB, single partition, FAT32, USB2 Hard Disk on a Windows 98SE system using just the NUSB update (didn't have the Enable48BitLBA update installed) Worked without a hitch and I tested it beyond the 137GB barrier. The disk (seagate ide 16MB buffer) came with NTFS pre-installed on it, so I had to use a neat program "swissknife 3.22" http://www.compuapps.com/download/Swissknife/swissknife.htm to create a large single FAT32 formatted partition. I actually used the program on a WinXp box, but the program says it works in Win 95b/98/me/2000/XP/NT 4.0