George is right!!!! Two drives. (OR MORE)
(Then again, you must already have two or more drives, to be able to slip it out and loan it to a friend)
Personally, for optimal performance use one drive for programs, use one for files. For speed, do not allow any drive to get over 50% full.
Memory is now so cheap and memories are priceless.
250-gigs? Ooohhhh, the happy, simple b,y-gone days of SingleSidedFloppyDrives with 160K that far surpassed the wonders of a RS-Trash80.
Sincerely,
Gargoyle
Now moving back towards fully printed, multiple copies, different locations, of hard text PRINTED material bound into volumes. How long will a USB memory stick hold data?