sg_write_buffer: version: 1.21 20151219

Usage: sg_write_buffer [--bpw=CS] [--help] [--id=ID] [--in=FILE] [--length=LEN] [--mode=MO] [--offset=OFF] [--raw] [--skip=SKIP] [--specific=MS] [--timeout=TO] [--verbose] [--version] DEVICE where: --bpw=CS|-b CS CS is chunk size: bytes per write buffer command (def: 0 -> as many as possible) --help|-h print out usage message then exit --id=ID|-i ID buffer identifier (0 (default) to 255) --in=FILE|-I FILE read from FILE ('-I -' read from stdin) --length=LEN|-l LEN length in bytes to write; may be deduced from FILE --mode=MO|-m MO write buffer mode, MO is number or acronym (def: 0 -> 'combined header and data' (obs)) --offset=OFF|-o OFF buffer offset (unit: bytes, def: 0) --raw|-r read from stdin (same as '-I -') --skip=SKIP|-s SKIP bytes in file FILE to skip before reading --specific=MS|-S MS mode specific value; 3 bit field (0 to 7) --timeout=TO|-t TO command timeout in seconds (def: 300) --verbose|-v increase verbosity --version|-V print version string and exit Performs one or more SCSI WRITE BUFFER commands. Use '-m xxx' to list available modes. A chunk size of 4 KB ('--bpw=4k') seems to work well. Example: sg_write_buffer -b 4k -I xxx.lod -m 7 /dev/sg3