## 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.#### Uncommenting the options below will cause them to be added to the DEFAULT## string which is prepended to options listed in the blocks below.#### 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.# -q be quietquiet# -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# -c enable (E)IDE 32-bit I/O support - can be any of 0,1,3io32_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 standby (spindown) timeout for the drive#spindown_time = 24# -u interrupt-unmask flag for the driveinterrupt_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 Select password to use# user-master = u# --security-mode Set the security mode# security_mode = h# Root file systems. Please see README.Debian for details# ROOTFS = /dev/hda## New note - 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 'command_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.#Samples follow:#First three are good for devfs systems, fourth one for systems that do #not use devfs. The fifth example uses straight hdparm command line#syntax. Any of the blocks that use command line syntax must begin with#the keyword 'command_line', and no attempt is made to validate syntax. #It is provided for those more comfortable with hdparm syntax. #/dev/discs/disc0/disc {# mult_sect_io = 16# write_cache = off# spindown_time = 240#}#/dev/discs/disc1/disc {# mult_sect_io = 32# spindown_time = 36# write_cache = off#}#/dev/cdroms/cdrom0 {# dma = on # interrupt_unmask = on# io32_support = 0#}#/dev/hda {# mult_sect_io = 16# write_cache = off# dma = on#}#command_line {# hdparm -q -m16 -q -W0 -q -d1 /dev/hda#}/dev/hda {}/dev/hdc {}/dev/hde { mult_sect_io = 16}/dev/hdg { mult_sect_io = 16}