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	nohd
       parm 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 drives read-lookahead feature
	      lookahead = on

       -b bus state
	      bus = on

       -B apm setting
	      apm = 255

       -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 drives "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 drives 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 drives 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 drives security status
	      security_freeze

       --security-unlock Unlock the drives 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

       You can use straight hdparm commands in this config file as well -  the
       set up is ugly, but it keeps backwards compatibility.  Additionally, it
       should be noted that any blocks	that  begin  with  the	keyword  com
       mand_line  are  not  run  until	after the root filesystem is mounted.
       This is done to avoid running blocks twice.  If you need to run	hdparm
       to set parameters for your root disk, please use the standard format.

AUTHOR
       hdparm  was  written by Mark Lord  The init script and
       configuration  file  are   currently   maintained   by	Stephen   Gran
       , but are the result of the work of many people.

       This manual page was created by Stephen Gran  for the
       Debian GNU/Linux system (but may be used by others).




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