../tc512 -v /dev/st0 t1
file 0 record length 512: 38 records (0..37)
file 0 record length -1: 2 records (38..39)
file 0 record length 512: 26697 records (40..26736)
end of file 0, 13688318 bytes
end of tape, 13688318 total bytes 2 errors