hey guys, i am googling this and not finding any clear answers. I used both unetbootin and universalusbinstaller to install BackTrack 5 onto a 4GB flash drive. The boot screen loads but no matter which BackTrack load i choose i get

(initramfs) Can not mount /dev/loop0 (/cdrom/casper/filesystem.squashfs) on //filesystem.squashfs

any ideas?