NTFS partition scanner

partscan.sh

#!/bin/bash

start=1048576 # decimal offset of data on drive (past MBR, 1MB)
end=10485760  # decimal offset of data on drive (well past weird '...U...N.b..' structures, 10MB)
image=/mnt/seagate/wd_backup.img
mount=/mnt/wd

for ((offset=$start; offset<=$end; offset++)); do
    echo "trying offset: $offset"
    status="$(mount -o ro,offset=$offset,loop -t ntfs $image $mount >/dev/null 2>&1; echo $?)"

    if [[ "$status" -ne '32' ]]; then
	echo "$image may have mounted successfully at offset: $offset"
        exit 0
    fi
done
echo "Search space $start - $end exhausted"