FAT32 has a maximum file size limitation. Here's the wikipedia on it so I'll not write further why. See "Max File Size" at http://en.wikipedia.org/wiki/File_Allocation_Table
Next I want to share that USB drives with FAT32 volumes are showing up in piles because of complaints of file loss or total wipeouts. FAT32 while good for exchanging from MAC to PC and back is not robust.
I strongly suggest you convert it to NTFS if you want those files to stick around.
Bob
Hi i have a 250 Gb external hard drive.In my computer windows xp sp2 reports:- "file system fat32,free space 56.2 Gb, total size 232 Gb".
However when i try to copy a 4.29 Gb .iso file to external hd i get an error message saying there is not enough disk space.
Any help much appreciated and thanks in advance.
p.s merry xmas

Chowhound
Comic Vine
GameFAQs
GameSpot
Giant Bomb
TechRepublic