I have a raspberry pi running with raspbmc. There is connected a WD Elements ( /dev/sda1 ).
Unfortunately the disk doesn't spin down. It looks like hdparm is not working.
The following I have tried:
sudo hdparm -y /dev/sda1 /dev/sda1: issuing standby command
I tested it with
sudo hdparm -C /dev/sda1 /dev/sda1: drive state is: standby
looks like it spinned down and turned into standby.
The problem is, it doesn't go in standby by itself. Even with
sudo hdparm -S 5
it doesnt spin down after 25 seconds.
Thanks so far.