Hibernate Modes


Using safe sleep on unsupported computers might cause unexpected behavior or damage your computer.
Use it at your own risk.


To see what MODE you are in do,
/usr/bin/pmset -g | grep hibernatemode

And to CHANGE the mode to the best mode,
make sure to turn ON "Use secure vitual memory" in the Security Prefs Pane then do,
/usr/bin/sudo /usr/bin/pmset -a hibernatemode 5

 0 : Called "Quick Sleep":
     (may also be called "Light Sleep" or "hardware suspend")
     Default behavior on most Apple computers.
     RAM is still powered on while sleeping.
     Wake up is fast.
     LED pulses.
 
 1 : Called "Deep Sleep":
     System is totally shut down while sleeping.
     RAM contents are dumped to disk.
     Wake up is slow.
     Front LED is OFF.
     Progress bar when awakened from sleep.

 3 : Called "Safe Sleep":
     Default behavior on Powerbook HD computers.
     RAM is still powered on while sleeping.
     Wake up MAY be fast, depends.
     RAM contents are also dumped to disk. 
     Front LED is OFF.
     Progress bar when awakened from sleep.

 5 : Same as mode 1 for systems with encrypted virtual memory. 
 
 7 : Same as mode 3 for systems with encrypted virtual memory.

Notes:

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