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       hdapsd - park the drive in case of an emergency


       hdapsd [-f|-d <device>|-s <sensitivity>|-a|-v|-b|-p|-t|-y|-l|-V|-h]


       -d --device=<device>
              <device> is likely to be hda or sda. Can be given multiple times
              to protect multiple devices.

       -f --force
              Force unloading heads, even if kernel thinks different  (on  pre
              ATA7 drives).  This only works when adding devices by hand (-d).

       -s --sensitivity=<sensitivity>
              How sensitive hdapsd should be to movements.   Defaults  to  15,
              higher values mean less sensitive.

       -a --adaptive
              Adaptive   threshold   (automatic  increase  when  the  built-in
              keyboard/mouse are used).

       -v --verbose
              Get verbose statistics.

       -b --background
              Run the process in the background.

       -p --pidfile[=<pidfile>]
              Create a pid file when running in background.  If  <pidfile>  is
              not specified, it’s set to /var/run/

       -t --dry-run
              Don’t actually park the drive.

       -y --poll-sysfs
              Force use of sysfs interface to accelerometer.

       -l --syslog
              Log to syslog instead of stdout/stderr.

       -V --version
              Display version information and exit.

       -h --help
              Display help and exit.

       You can send SIGUSR1 to deactivate hdapsd for 8 seconds.