Completely hide hdd from Windows

ftball

Honorable
Feb 15, 2013
44
0
10,540
Hello,
I have Dual boot setup, Windows 8.1 and Ubuntu. Also, I have both SSD and HDD. SSD contains two partitions, one for Ubuntu, other for Windows. Windows is used only and actually only for a single game. My problem is that the HDD is starts spinning every ~10 seconds. I have set "Turn off hdd after" to 1 minute, however, it doesn't stay idle for even 15 seconds. Also, I put the disk offline through Disk Management, not that it was visible or readable by Windows earlier, since it's in ext4. So, how do I prove Windows that they can't do anything with that HDD?
 

ftball

Honorable
Feb 15, 2013
44
0
10,540


Why would Windows want to access a disk that is unreadable, and also excplicitly marked so? In Ubuntu, I tell OS that a readable disk should spin down, and it does, that's it, no HDD access for many many hours.