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hdparm.conf(5)                      hdparm configuration file                      hdparm.conf(5)

       hdparm.conf - Debian configuration file for hdparm

       This is the default configuration for hdparm for Debian.  It is a rather simple script, so
       please follow the following guidelines :) Any line that begins with a comment is ignored -
       add as many as you like.

       Note  that  an  in-line  comment  is not supported.  If a line consists of whitespace only
       (tabs, spaces, carriage return), it will be ignored, so you can space  control  fields  as
       you like.  ANYTHING ELSE IS PARSED!!

       This  means  that  lines  with stray characters or lines that use non # comment characters
       will be interpreted by the initscript.  This has probably minor, but potentially  serious,
       side  effects  for  your hard drives, so please follow the guidelines.  Patches to improve
       flexibilty welcome.

       Please read /usr/share/doc/hdparm/README.Debian for notes about known  issues,  especially
       if you have an MD array.

       Note  that  if the init script causes boot problems, you can pass 'nohdparm' on the kernel
       command line, and the script will not be run.

       Setting an option outside of one of the stanzas enables it for all drives.

       If an option is listed twice, the second instance replaces the first.

       /sbin/hdparm is not run unless a block of the form:

       DEV {




       exists.  This blocks will cause /sbin/hdparm OPTIONS DEV to be run.  Where OPTIONS is  the
       concatenation of all options previously defined outside of a block and all options defined
       with in the block.

       -q be quiet

       -a sector count for filesystem read-ahead
              read_ahead_sect = 12

       -A disable/enable the IDE drive's read-lookahead feature
              lookahead = on

       -b bus state
              bus = on

       -B apm setting
              apm = 255

       -B apm setting when on battery
              apm_battery = 127

       -c enable (E)IDE 32-bit I/O support - can be any of 0,1,3
              io32_support = 1

       -d disable/enable the "using_dma" flag for this drive
              dma = off

       -D enable/disable the on-drive defect management
              defect_mana = off

       -E cdrom speed
              cd_speed = 16

       -k disable/enable the "keep_settings_over_reset" flag for this drive
              keep_settings_over_reset = off

       -K disable/enable the drive's "keep_features_over_reset" flag
              keep_features_over_reset = on

       -m sector count for multiple sector I/O
              mult_sect_io = 32

       -P maximum sector count for the drive's internal prefetch mechanism
              prefetch_sect = 12

       -r read-only flag for device
              read_only = off

       -s Enable/disable the power-on in standby feature
              poweron_standby = off

       -S standby (spindown) timeout for the drive
              spindown_time = 24

       -u interrupt-unmask flag for the drive
              interrupt_unmask = on

       -W Disable/enable the IDE drive's write-caching feature
              write_cache = off

       -X IDE transfer mode for newer (E)IDE/ATA2 drives
              transfer_mode = 34

       -y force to immediately enter the standby mode

       -Y force to immediately enter the sleep mode

       -Z Disable the power-saving function of certain Seagate drives

       -M Set the acoustic management properties of a drive

       -p Set the chipset PIO mode

       --security-freeze Freeze the drive's security status

       --security-unlock Unlock the drive's security
              security_unlock = PWD

       --security-set-pass Set security password
              security_pass = password

       --security-disable Disable drive locking

       --user-master Specifies which password to select
              security_mode = u

       --security-mode Set the security mode
              security_mode = h

       Root file systems.
              Please see README.Debian for details.  ROOTFS = /dev/hda

       Blocks beginning with the keyword 'command_line' instead of a  device  identifier  are  no
       longer  supported  for backwards compatibility by this version of hdparm.  Options must be
       introduced by a correct device identifier instead so that they will be  applied  when  the
       device becomes available.

       hdparm  was  written by Mark Lord <mlord AT pobox.com> The init script and configuration file
       are currently maintained by Stephen Gran <sgran AT debian.org>, but are  the  result  of  the
       work of many people.

       This  manual  page was created by Stephen Gran <sgran AT debian.org> for the Debian GNU/Linux
       system (but may be used by others).

Stephen Gran                             August 10, 2005                           hdparm.conf(5)

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