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New package: hdparm-6.9-1

A Cygwin port of hdparm is now part of the Cygwin distribution.

Hdparm ( is a Linux tool to
get/set ATA/SATA drive parameters and driver settings.

I have added a HDIO_DRIVE_CMD ioctl emulation layer to provide the drive
related command subset of hdparm on Windows.

It should work on XP SP2 and 2003 if the driver provides
ATA_PASS_THROUGH. It also supports 2000 and XP SP1 if undocumented
IDE_PASS_THROUGH is available. I haven't tested it on Vista yet.

hdparm -I /dev/sda     -- print disk information and current settings
hdparm -M 128 /dev/sda -- set acoustic management to "quiet"
hdparm -M 254 /dev/sda -- set acoustic management to "fast"
hdparm -S 120 /dev/sdb -- set 2nd disks standby timeout to 10min
hdparm -y /dev/sdb     -- set 2nd disk to standby mode
hdparm -t /dev/sda     -- perform disk read timings
hdparm --security-freeze /dev/sda -- Freeze security settings
(There are still BIOS versions which leave the drive vulnerable)

Administrator rights are required to run these commands.

Device names and supported command subset:

hdparm - get/set hard disk parameters - version v6.9-20070228 (Cygwin)

Usage:  hdparm  [options] [device]

/dev/hd[a-z]    harddisk 0,1,...
/dev/sd[a-z]    harddisk 0,1,...
/dev/scd[0-9]   cd-rom 0,1,...

-A   set drive read-lookahead flag (0/1)
-B   set Advanced Power Management setting (1-255)
-C   check IDE power mode status
--debug   enable debugging output
--direct  use O_DIRECT to bypass page cache for timings
-D   enable/disable drive defect management
-f   flush buffer cache for device on exit
-g   display drive geometry
-h   display terse usage information
-H   read temperature from drive (Hitachi only)
-i   display drive identification
-I   detailed/current information directly from drive
--Istdin  read identify data from stdin as ASCII hex
--Istdout write identify data to stdout as ASCII hex
-K   set drive keep_features_over_reset flag (0/1)
-L   set drive doorlock (0/1) (removable harddisks only)
-M   get/set acoustic management (0-254, 128: quiet, 254: fast)
-P   set drive prefetch count
-q   change next setting quietly
-s   set power-up in standby flag (0/1)
-S   set standby (spindown) timeout
-t   perform device read timings
-T   perform cache read timings
-v   defaults; same as -g for IDE drives
-V   display program version and exit immediately
-w   perform device reset (DANGEROUS)
-W   set drive write-caching flag (0/1) (DANGEROUS)
-X   set IDE xfer mode (DANGEROUS)
-y   put IDE drive in standby mode
-Y   put IDE drive to sleep
-Z   disable Seagate auto-powersaving mode
--security-freeze   Freeze security settings until reset

Christian Franke


To update your installation, click on the "Install Cygwin now" link on
the web page.  This downloads setup.exe to your
system.  Then, run setup and answer all of the questions.

If you have questions or comments, please send them to the Cygwin
mailing list.


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