Unable to disable hibernatemode since update 2.0

Hi hkim823,

To reverse the above last command you would place a "no" in front of schg i.e. ....and that would reverse the change?

change his flag to immuable :

chflags noschg /private/var/vm/sleepimage

Is that correct?

I found that after upgrading to 10.8.5, my Macbook Pro Retina started to take 20 seconds or so to go to sleep. Like this thread explains, it seems to be because the hibernateflag is now ignored by the OS .. I tried both suggestions here (chflags and /dev/null), and those both prevent the sleepimage from being created, but going to sleep still takes just as long. Very frustrating!

I solved my problem .. I found this article "Addressing slow sleep times in OS X"

http://reviews.cnet.com/8301-13727_7-20077964-263/addressing-slow-sleep-times-in -os-x/

I tested sleep after each step, and it went back to normal after resetting PRAM with Option-Cmd-P-R during boot chime. I will never know what caused it or exactly why PRAM needed resetting.

[I had already reset the SMC after the 10.8.5 update as the system kept freezing for seconds at a time right after the update. And I was under the impression Apple OS X computers were more stable than Windows boxes ... This is my first Apple computer after way too many years with Windows. I will reset both SMC and NVRAM after all system updates from now on]

Thanks a lot! This is the true solution.

Theoretically yes but actually you have to get into the single-user mode to get the required user level in order to really perform noschg, otherwise you'll get "operation not permitted". See this post: http://superuser.com/questions/117944/unset-the-system-immutable-bit-in-mac-os-x

Hi guys,

I have done this routine about 4 times now. As soon as my macbook air goes back into hibernation mode it immediately fills up 8gb of hard drive space leaving me a gig to keep my head above water!

Any clues?

Thanks for your help thus far.

Stephen

This is what's happening now when I put the last two commands in Terminal:

Stephens-MacBook-Air:~ stephen$ touch /private/var/vm/sleepimage

touch: /private/var/vm/sleepimage: Permission denied

Stephens-MacBook-Air:~ stephen$ chflags -uchg /private/var/vm/sleepimage

chflags: illegal option -- u

usage: chflags [-fhv] [-R [-H | -L | -P]] flags file ...

Stephens-MacBook-Air:~ stephen$