The Fidelix Linux Distribution

Simple, Stable, and Secure

HDPARM(1) User Commands HDPARM(1)

hdparm - manual page for hdparm 1.31.1

hdparm [OPTIONS] [DEVICE]

BusyBox v1.31.1 (2020-04-30 13:38:01 EDT) multi-call binary.
-a
Get/set fs readahead
-A
Set drive read-lookahead flag (0/1)
-b
Get/set bus state (0 == off, 1 == on, 2 == tristate)
-B
Set Advanced Power Management setting (1-255)
-c
Get/set IDE 32-bit IO setting
-C
Check IDE power mode status
-d
Get/set using_dma flag
-D
Enable/disable drive defect-mgmt
-f
Flush buffer cache for device on exit
-g
Display drive geometry
-h
Display terse usage information
-i
Display drive identification
-I
Detailed/current information directly from drive
-k
Get/set keep_settings_over_reset flag (0/1)
-K
Set drive keep_features_over_reset flag (0/1)
-L
Set drive doorlock (0/1) (removable harddisks only)
-m
Get/set multiple sector count
-n
Get/set ignore-write-errors flag (0/1)
-p
Set PIO mode on IDE interface chipset (0,1,2,3,4,...)
-P
Set drive prefetch count
-Q
Get/set DMA tagged-queuing depth (if supported)
-r
Get/set readonly flag (DANGEROUS to set)
-R
Register an IDE interface (DANGEROUS)
-S
Set standby (spindown) timeout
-t
Perform device read timings
-T
Perform cache read timings
-u
Get/set unmaskirq flag (0/1)
-U
Unregister an IDE interface (DANGEROUS)
-v
Defaults; same as -mcudkrag 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
Tristate device for hotswap (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
-z
Reread partition table
April 2020 Fidelix 1.0