A AmanO macrumors regular Original poster Dec 31, 2015 #1 I keep getting one from my 4,1 mac pro. It sounds like a HD being accessed. It does not happen all the time. It does happen when the system is at idle.
I keep getting one from my 4,1 mac pro. It sounds like a HD being accessed. It does not happen all the time. It does happen when the system is at idle.