Run command

foremost -c conf -i /dev/sda3 -o /restore

Get file header

# hexdump sample.mkv |head -1
0000000 451a a3df 0001 0000 0000 2300 8642 0181

\x1a\x45\xdf\xa3

Config Examples

# xml
xml y  500000   \x3c\x3f\x78\x6d\x6c\x20   \x6e\x6f\x74\x65\x73\x3e\x0a