On my computer I have 3 hard disks with 3 different OSes, but one of those disks it's a little bit old and I want to make it sleep always, because it consumes power and makes noise, but I'm not even using it!
I tried with the Disk Utility GUI, but it doesn't do anything. Also tried with hdparm.conf, just by adding my device and "sleep" on a new entry, it works, it makes sleep the hard disk, but when ubuntu loads up, the disk wakes up again.
Can I make a "permanent" sleep ONLY for this hard disk drive?
Thanks.