NAME

       hdparm.conf - Debian configuration file for hdparm

DESCRIPTION

       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 {

       option

       option

       }

       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.

OPTIONS

       -q be quiet
              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
              standby

       -Y force to immediately enter the sleep mode
              sleep

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

       -M Set the acoustic management properties of a drive
              acoustic_management

       -p Set the chipset PIO mode
               chipset_pio_mode

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

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

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

       --security-disable Disable drive locking
              security_disable

       --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.

AUTHOR

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

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