I have 2 disks in MBP: SSD and regular HDD. I keep only data files on HDD and do not need them often. The problem: even if I eject the HDD drive from Finder or Disk Utility, when macbook is awaken from sleep, OS automatically wakes up HDD. Is it possible to prevent it?
Addition: Ideally it would be cool to make OS not to spin up even mounted drive.