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## 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 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 # -R Enable/Disable Write-Read-Verify, on to enable (R1), off to disable (R0) # write_read_verify = off # -s Turn on/off power on in standby mode # poweron_standby = off # -S standby (spindown) timeout for the drive #spindown_time = 24 # "force_spindown_time" - the same as "-S", but will be applied even if disk # doesn't support APM. Use on your own risk. This is debian specific option. # See also #758988 #force_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 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 #}