hdparm

Get and set SATA and IDE hard drive parameters. More information: https://manned.org/hdparm.

• Request the identification info of a given device:

sudo hdparm -I /dev/device

• Get the Advanced Power Management level:

sudo hdparm -B /dev/device

• Set the Advanced Power Management value (values 1-127 permit spin-down, and values 128-254 do not):

sudo hdparm -B 1 /dev/device

• Display the device’s current power mode status:

sudo hdparm -C /dev/device

• Force a drive to immediately enter standby mode (usually causes a drive to spin down):

sudo hdparm -y /dev/device

• Put the drive into idle (low-power) mode, also setting its standby timeout:

sudo hdparm -S standby_timeout device

• Test the read speed of a specific device:

sudo hdparm -tT device