mkdir /media/card/boot-imagesdd if=/dev/zero of=/media/card/boot-images/my-rootfs.bin count=102400losetup /dev/loop1 /media/card/boot-images/my-rootfs.binmke2fs -j /dev/loop1mkdir /media/imagemount -t ext3 /dev/loop1 /media/imagecd /media/imagetar zxvfp /path/to/image.tgzcd ..umount imagesync