configure some settings for hard drives, like hibernation/standby/idle

set idle / standby timeout

the documentation is super confusing about this, here’s a way to set it to 3 minutes:

sudo hdparm -S 36 /dev/disk/by-uuid/48ae93d7-b351-4d05-b177-db22a4a8g4dd

get the UUID beforehand (lsblk -o NAME,UUID)

please, please check the man page of hdparm if absolutely necessary.

make permanent settings hdparm

so they persist during a reboot of the system, edit /etc/hdparm.conf:

/dev/sda {
        spindown_time = 36
}