./7309.dt
block 0072 Mark track error, got 71, expected 70 or 73
Unexpected block, got 000000, expected 000073
Block length mismatch, got 86, expected 256, block 1
Unexpected block, got 000000, expected 000014
Endzone reached at block 1474
./7309.dt is 12 bit format
block count is off, expecting 1474, got 578 in ./7309.dt
