Netzstaub: iPod-surgery I figured the only solution would be to map the defective sectors by hand. A program would read a block, see if the ipod locked up by getting a timeout, reset the ipod, and try the next block. This way, I could get a pretty good image of which block were defective. The second tool would then take these sector numbers, add a few blocks of padding, and mark them as defective in the FAT (and in the FAT backup copy). The ipod would then handle these sectors as defective from the start.