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

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 = 128

       -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).

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