Usage: sg_prevent [--allow] [--help] [--prevent=PC] [--verbose] [--version]
                  DEVICE
  where:
    --allow|-a            allow media removal
    --help|-h             print usage message then exit
    --prevent=PC|-p PC    prevent code value (def: 1 -> prevent)
                            0 -> allow, 1 -> prevent
                            2 -> persistent allow, 3 -> persistent prevent
    --verbose|-v          increase verbosity
    --version|-V          print version string and exit

Performs a SCSI PREVENT ALLOW MEDIUM REMOVAL command