Usage: sg_start [--eject] [--fl=FL] [--help] [--immed] [--load] [--loej]
                [--mod=PC_MOD] [--noflush] [--pc=PC] [--readonly]
                [--start] [--stop] [--verbose] [--version] DEVICE
  where:
    --eject|-e      stop unit then eject the medium
    --fl=FL|-f FL    format layer number (mmc5)
    --help|-h       print usage message then exit
    --immed|-i      device should return control after receiving cdb,
                    default action is to wait until action is complete
    --load|-l       load medium then start the unit
    --loej|-L       load or eject, corresponds to LOEJ bit in cdb;
                    load when START bit also set, else eject
    --mod=PC_MOD|-m PC_MOD    power condition modifier (def: 0) (sbc)
    --noflush|-n    no flush prior to operation that limits access (sbc)
    --pc=PC|-p PC    power condition: 0 (default) -> no power condition,
                    1 -> active, 2 -> idle, 3 -> standby, 5 -> sleep (mmc)
    --readonly|-r    open DEVICE read-only (def: read-write)
                     recommended if DEVICE is ATA disk
    --start|-s      start unit, corresponds to START bit in cdb,
                    default (START=1) if no other options given
    --stop|-S       stop unit (e.g. spin down disk)
    --verbose|-v    increase verbosity
    --old|-O        use old interface (use as first option)
    --version|-V    print version string then exit

    Example: 'sg_start --stop /dev/sdb'    stops unit
             'sg_start --eject /dev/scd0'  stops unit and ejects medium

Performs a SCSI START STOP UNIT command