Чт 07.09.17 20:43:31   Copying...
Чт 07.09.17 20:46:24   Write Error occurred at offset 1,199,505,408   (87)
Чт 07.09.17 20:46:24   Cannot write to target, aborting...
Чт 07.09.17 20:46:24   Average speed: 6,9 MB/s
Чт 07.09.17 20:46:24   Operation terminated at offset 1,199,505,408    LBA 2,342,784

What am I doing wrong?