

Correct answer.
After setting the spin down timer using hdparm, unmount the drive and it will spin down accordingly.
This also makes sure you are not spinning down drives just for a few minutes of rest.
Now just if my SSD were not heating itself to 40℃ when at its lowest power mode when unmounted…







It’s their flight pattern for me too.
Also, I have never been in a place with enough butterflies that some would get in my face, or I might have ended up smacking some that catch me distracted.