When entering hibernation, does OS X explicitly lock an encrypted HDD? I'm not talking about FileVault 2 on the system volume. My second HDD is encrypted. Looking at the system log, I can see when I boot it explicitly mounts both the system volume and my second HDD (of course). However, I do not see anything in the log during shutdown that looks like it explicitly unmounts the drives, but that may just be me not searching for the correct term. Unexpectedly, I do not see any explicit mount notes in the system log when waking from hibernation. I thought OS X would unmount drives when going into hibernation. That does not appear to be the case, or the re-mounting event is not logged, which seems unlikely. So, if drives are not unmounted when going into hibernation, is there some sort of explicit "lock" happening for an encrypted (non-system) volume?