I just picked up a USB drive that has "Ready Boost". So, where is the "Ready Boost"? I know that it turns the free space into RAM for Vista... but is it part of the hardware of the drive? or is it software on the disk? I'd like to clean off the disk because it came with a bunch of crap on it that I don't want (U3)... but I don't know if I can, because I want to keep it readyboost enabled.