The “hdparm” command is used to update and view parameters of hard disk drives. Which can be used to perform various tasks like checking the disk’s performance, enabling or disabling certain features, changing the disk’s power management settings, and more.
- Using hdparm we can get/set SATA/IDE device parameters.
- It comes from “hdparm-9.16” package.
- Configuration Files:
/etc/hdparm.conf - Path: /sbin/hdparm
Examples:
1. To get the device parameters
| # hdparm /dev/sde |
2. To get the sector count of the file system
| # hdparm /dev/sde |
3. To get the IDE read ahead look ahead feature
| # hdparm -A /dev/sde # hdparm -a /dev/sde |
4. To get the bus state (****)
| # hdparm -b /dev/sde |
5. To get the bus state
| # hdparm -b /dev/sda |
6. To query/set the adavanced power management status
| # hdparm -B /dev/sda |
7. To query/set the 32 Bit I/O status
| # hdparm -c /dev/sda |
8. To see the current IDE power mode status
| # hdparm -C /dev/sda |
9. To enable/disable “using_dma” flag
| # hdparm -d /dev/sda |
10. To freeze/lock the current drive configuration
| # hdparm –dco-freeze /dev/sda |
11. To query and dump information regarding drive configuration settings
| # hdparm –dco-identify /dev/sda |
12. To Reset all drive settings
| # hdparm –dco-restore /dev/sda |
13. To bypass the page cache for direct reads
| # hdparm –direct /dev/sda |
14. To Enable/disable the on-drive defect management feature
| # hdparm -D /dev/sda |
15. To set CD / DVD drive speed
| # hdparm -E /dev/sda |
16. To sync and flush the buffer cache
| # hdparm -f /dev/sda |
17. To Flush the on-drive write cache buffer
| # hdparm -F /dev/sda |
18. To Display the drive geometry
| # hdparm -g /dev/sda |
19. To display terse usage information
| # hdparm -h /dev/sda |
20. To display identification info which kernel drivers have stored
| # hdparm -i /dev/sda |
21. To Request identification info directly from the drive
| # hdparm -I /dev/sda |
22. To Issue ATA IDLE_IMMEDIATE command, to put the drive into a lower power state
| # hdparm –idle-immediate /dev/sda |
23. To Issue an ATA IDLE_IMMEDIATE_WITH_UNLOAD command, to unload or park the heads and put the drive into lower power state
| # hdparm –idle-unload /dev/sda |
24. To dumps the driveâs identify data in hex to stdout
| # hdparm –Istdout /dev/sda |
25. To Get/set the keep_settings_over_reset flag for the drive
| # hdparm -k /dev/sda |
26. To Set the drive’s keep_features_over_reset flag
| # hdparm -K /dev/sda |
27. To Set the drive´s doorlock flag
| # hdparm -L /dev/sda |
28. To Get/set sector count for multiple sector I/O on the drive
| # hdparm -m /dev/sda |
29. To deliberately create a bad sector
| # hdparm –make-bad-sector /dev/sda |
30. To Get/set Automatic Acoustic Management (AAM) setting
| # hdparm -M /dev/sda |
31. To Get/set max visible number of sectors
| # hdparm -N /dev/sda |
32. To get/set “ignore write errors” flag in the driver
| # hdparm -n /dev/sda |
33. To Attempt to reprogram the IDE interface chipset for the specified PIO mode
| # hdparm -p /dev/sda |
34. To set maximum sector count for the drive´s internal prefetch mechanism
| # hdparm -P /dev/sda |
35. To Handle the next flag quietly,
| # hdparm -q /dev/sda |
36. To Put the drive into idle (low-power) mode
| # hdparm -S /dev/sda |
37. To perform timings of cache reads for benchmark and comparison purposes
| # hdparm -T /dev/sda |
38. To perform timings of device reads for benchmark and comparison purposes
| # hdparm -t /dev/sda |
39. To Get/set interrupt-unmask flag for the drive
| # hdparm -u /dev/sda |
40. To Display some basic settings
| # hdparm -v |
41. To display extra diagnostics from some commands
| # hdparm –verbose |
42. To get/set IDE/SATA drive´s write-caching feature
| # hdparm -W /dev/sda |
43. To set the IDE transfer mode for (E)IDE/ATA drives
| # hdparm -X /dev/sda |
44. To Force an IDE drive to immediately enter the low power consumption standby mode
| # hdparm -y /dev/sda |
45. To Force an IDE drive to immediately enter the lowest power consumption sleep mode
| # hdparm -Y /dev/sda |
46. To Force a kernel re-read of the partition table of the specified device
| # hdparm -z /dev/sda |
47. To Disable the automatic power-saving function of certain Seagate drives
| # hdparm -Z /dev/sda |
48. To Read the temperature from some (mostly Hitachi) drives
| # hdparm -H /dev/sda |
