I have MacBook Pro, late 2010. For a while I was using OS X 10.6 and sleep logic was next:
1. after closing lid macbook go to sleep (with momentary wake up on lid open)
2. after day or so of sleeping macbook changes it state to hiberante (ram2diskc I suppose). wake up should be performed with power button and it will take some time (like several minutes or so)

Recently I've upgraded my macbook with 8gb ram and ssd + OS X Mavericks. After closing lid macbook will go to sleep, but in my case it was "sleeping" for 3 days without hibernation (and about ~40% of battery was used). On ohter hand, Mavericks has option resume apps state after shutdown and it works almost nice except I would really prefer to have hibernate instead (e.g. I need state of my terminal with open programs/running commands inside it, some background services running, etc).

1 Answer 1


To see what the current sleep mode is (in Terminal):

pmset -g | grep hibernatemode

To change the sleep mode to hibernate:

sudo pmset -a hibernatemode 25

To set back to the default:

sudo pmset -a hibernatemode 3

More info: tutsplus - how to hibernate a mac

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