help first time modding:(:(

hi im trying 2 weeks to get my xbox softmodded,
i have an sandisk cruzer micro 4gb, i already have done the reformatting with gparted to: 512"fat32" 3.0gb"ext3" 356"linux-swap"
but when i plug it to my xbox i see only a memmory card on the left side, i dont see a popup showing with formatted

why xbox dont format my usb flash drive first?
(xbox see it as a normal memmory card without formatting it)

when i select erase from (xbox) memmory card later when i plug it to windows, windows see the flash drive as
"RAW"
what does RAW mean?
why not fatx?

please help i try this 2 weeks and still dont have a soft modded xbox