The file search is still on-going... It's now taken twice as long to
search for the signature as it took to clone/backup the data.
<< # dd if=/dev/copyofmd3 skip=17581481438 count=33 2>/dev/null |
hexdump -C >>
Yielded no useful data. The data is zero.
I checked the skip number from what you wrote; 4 times.
<<Is this from the start of the drive? It definitely suggests some
proprietary way of assembling the storage stack.>>
Yes, it was from the start of the drive - not partition. IE
dd if=/dev/sdb count=2048
