I am trying to have backtrack 3 boot off my USB but when i use the boot script in backtrack 3 the "bootinst.sh" it says everything is fine but when i try to boot off the USB it says

BOOT ERROR

So i tried formatting the USB and doing it Aging but this time in windows using the windows BAT file to set it up it said access denied after formatting it one more time it let me set it up from windows but it still would not boot after that i try formatting one last time went back in to backtrack 3 and try it aging it said everything is ok but still i get a boot error

I am using a 1gb Kingston USB