-h, --help, --usage
       Prints a usage message to STDOUT and exits.

-V, --version, --copyright, --license
       Prints version, copyright, license, home page and  SVN  revision  information  for  your  copy  of
       smartctl  to  STDOUT and then exits.  Please include this information if you are reporting bugs or
       problems.

-i, --info
       Prints the device model number, serial number, firmware version, and ATA Standard version/revision
       information.   Says  if  the  device supports SMART, and if so, whether SMART support is currently
       enabled or disabled.  If the device supports Logical Block Address mode (LBA mode)  print  current
       user  drive  capacity  in bytes. (If drive is has a user protected area reserved, or is "clipped",
       this may be smaller than the potential maximum drive capacity.)  Indicates if the drive is in  the
       smartmontools  database  (see  ´-v´  options  below).   If  so, the drive model family may also be
       printed. If ´-n´ (see below) is specified, the power mode of the drive is printed.

-a, --all
       Prints all SMART information about the disk, or TapeAlert information  about  the  tape  drive  or
       changer.  For ATA devices this is equivalent to
       ´-H -i -c -A -l error -l selftest -l selective´
       and for SCSI, this is equivalent to
       ´-H -i -A -l error -l selftest´.
       Note  that  for  ATA  disks this does not enable the non-SMART options and the SMART options which
       require support for 48-bit ATA commands.

-x, --xall
       Prints all SMART and non-SMART information about the device. For ATA devices this is equivalent to
       ´-H -i -c -A -f brief -l xerror,error -l xselftest,selftest
       -l selective -l directory -l scttemp -l scterc -l sataphy´.
       and for SCSI, this is equivalent to
       ´-H -i -A -l error -l selftest -l background -l sasphy´.

--scan Scans for devices and prints each device name, device type and protocol ([ATA]  or  [SCSI])  info.
       May  be used in conjunction with ´-d TYPE´ to restrict the scan to a specific TYPE.  See also info
       about platform specific device scan and the DEVICESCAN directive on smartd(8) man page.

--scan-open
       Same as --scan, but also tries to open each device before printing device info.  The  device  open
       may change the device type due to autodetection (see also ´-d test´).

-q TYPE, --quietmode=TYPE
       Specifies that smartctl should run in one of the  two  quiet  modes  described  here.   The  valid
       arguments to this option are:

       errorsonly  -  only print: For the ´-l error´ option, if nonzero, the number of errors recorded in
       the SMART error log and the power-on time when they occurred; For the ´-l selftest´ option, errors
       recorded  in  the device self-test log; For the ´-H´ option, SMART "disk failing" status or device
       Attributes (pre-failure or usage) which failed either now or in the past;  For  the  ´-A´  option,
       device Attributes (pre-failure or usage) which failed either now or in the past.

       silent - print no output.  The only way to learn about what was found is to use the exit status of
       smartctl (see RETURN VALUES below).

       noserial - Do not print the serial number of the device.

-d TYPE, --device=TYPE
       Specifies the type of the device.  The valid arguments to this option are:

-T TYPE, --tolerance=TYPE
       [ATA only] Specifies how tolerant smartctl should be of ATA and SMART command failures.

-b TYPE, --badsum=TYPE
       [ATA only] Specifies the action smartctl should take if a checksum error is detected in  the:  (1)
       Device Identity Structure, (2) SMART Self-Test Log Structure, (3) SMART Attribute Value Structure,
       (4) SMART Attribute Threshold Structure, or (5) ATA Error Log Structure.

       The valid arguments to this option are:

       warn - report the incorrect checksum but carry on in spite of it.  This is the default.

       exit - exit smartctl.

       ignore - continue silently without issuing a warning.

-r TYPE, --report=TYPE
       Intended primarily to help smartmontools developers understand the behavior  of  smartmontools  on
       non-conforming   or   poorly  conforming  hardware.   This  option  reports  details  of  smartctl
       transactions with the device.  The option can be used multiple times.  When  used  just  once,  it
       shows  a record of the ioctl() transactions with the device.  When used more than once, the detail
       of these ioctl() transactions are reported in greater detail.  The valid arguments to this  option
       are:

-n POWERMODE, --nocheck=POWERMODE
       [ATA only] Specifies if smartctl should exit before performing any checks when the device is in  a
       low-power mode. It may be used to prevent a disk from being spun-up by smartctl. The power mode is
       ignored by default.  A nonzero exit status is returned if the device is in one  of  the  specified
       low-power modes (see RETURN VALUES below).

-s VALUE, --smart=VALUE
       Enables or disables SMART on device.  The valid arguments to this option are  on  and  off.   Note
       that the command ´-s on´ (perhaps used with with the ´-o on´ and ´-S on´ options) should be placed
       in a start-up script for your machine, for example in rc.local or  rc.sysinit.  In  principle  the
       SMART feature settings are preserved over power-cycling, but it doesn´t hurt to be sure. It is not
       necessary (or useful) to enable SMART to see the TapeAlert messages.

-o VALUE, --offlineauto=VALUE
       [ATA only] Enables or disables SMART automatic offline test, which  scans  the  drive  every  four
       hours  for  disk  defects.  This  command  can be given during normal system operation.  The valid
       arguments to this option are on and off.

-S VALUE, --saveauto=VALUE
       [ATA] Enables or disables SMART autosave of device vendor-specific Attributes. The valid arguments
       to this option are on and off.  Note that this feature is preserved across disk power  cycles,  so
       you should only need to issue it once.

-H, --health
       Check: Ask the device to report its SMART health status  or  pending  TapeAlert  messages.   SMART
       status is based on information that it has gathered from online and offline tests, which were used
       to determine/update its SMART vendor-specific Attribute values. TapeAlert status  is  obtained  by
       reading the TapeAlert log page.

       If the device reports failing health status, this means either that the device has already failed,
       or that it is predicting its own failure within the next 24 hours.  If this happens, use the  ´-a´
       option  to  get  more information, and get your data off the disk and to someplace safe as soon as
       you can.

-c, --capabilities
       [ATA only] Prints only the generic  SMART  capabilities.   These  show  what  SMART  features  are
       implemented  and how the device will respond to some of the different SMART commands.  For example
       it shows if the device logs errors, if it supports offline surface scanning, and so  on.   If  the
       device  can  carry out self-tests, this option also shows the estimated time required to run those
       tests.

       Note that the time required to run the Self-tests (listed in minutes) are fixed.  However the time
       required  to  run  the Immediate Offline Test (listed in seconds) is variable.  This means that if
       you issue a command to perform an Immediate Offline test with the ´-t offline´  option,  then  the
       time  may jump to a larger value and then count down as the Immediate Offline Test is carried out.
       Please see REFERENCES below for further information about the the flags and capabilities described
       by this option.

-A, --attributes
       [ATA] Prints only the vendor specific SMART Attributes.  The Attributes are numbered from 1 to 253
       and have specific names and ID numbers. For example Attribute 12 is "power cycle count": how  many
       times has the disk been powered up.

-f FORMAT, --format=FORMAT
       [ATA only] Selects the output format of the attributes to one of:

       old - Old smartctl format. This is the default unless the ´-x´ option is specified.

       brief - New format which fits into 80 colums (except  in  some  rare  cases).   This  format  also
       decodes four additional attribute flags.  This is the default if the '-x´ option is specified.

-l TYPE, --log=TYPE
       Prints either the SMART Error Log, the SMART Self-Test Log, the SMART Selective Self-Test Log [ATA
       only], the Log Directory [ATA only], or the Background Scan Results Log [SCSI  only].   The  valid
       arguments to this option are:

-v ID,FORMAT[:BYTEORDER][,NAME], --vendorattribute=ID,FORMAT[:BYTEORDER][,NAME]
       [ATA  only]  Sets  a vendor-specific raw value print FORMAT, an optional BYTEORDER and an optional
       NAME for Attribute ID.  This option may be used multiple times.

-F TYPE, --firmwarebug=TYPE
       [ATA only] Modifies the behavior of smartctl to compensate for some known  and  understood  device
       firmware or driver bug.  Except ´swapid´, the arguments to this option are exclusive, so that only
       the final option given is used.  The valid values are:

-P TYPE, --presets=TYPE
       [ATA only] Specifies whether smartctl should use any preset options that are  available  for  this
       drive.  By default, if the drive is recognized in the smartmontools database, then the presets are
       used.

-B [+]FILE, --drivedb=[+]FILE
       [ATA only] Read the drive database from FILE.  The new database replaces the built in database  by
       default.  If ´+´ is specified, then the new entries prepend the built in entries.

-t TEST, --test=TEST
       Executes TEST immediately.  The ´-C´ option can be used in conjunction with this option to run the
       short or long (and also for ATA devices, selective  or  conveyance)  self-tests  in  captive  mode
       (known as "foreground mode" for SCSI devices).  Note that only one test type can be run at a time,
       so only one test type should be specified per command line.  Note  also  that  if  a  computer  is
       shutdown  or power cycled during a self-test, no harm should result.  The self-test will either be
       aborted or will resume automatically.

-C, --captive
       [ATA] Runs self-tests in captive mode.  This has no effect with ´-t offline´ or if the ´-t´ option
       is not used.

       WARNING:  Tests  run  in captive mode may busy out the drive for the length of the test.  Only run
       captive tests on drives without any mounted partitions!

       [SCSI] Runs the self-test in "Foreground" mode.

-X, --abort
       Aborts non-captive SMART Self Tests.  Note that this command will abort the Offline Immediate Test
       routine only if your disk has the "Abort Offline collection upon new command" capability.