Q: RE - com.apple.PowerManagement.plist File
Hello,
I like many many people are having problems with either setting the iMac to sleep or getting it to wake up via the Lan (when using AppleTV, iPhone, iPad etc when Home Sharing is switched on). I am of the Latter group. It frustrates me that Apple spend so much effort getting their devices to communicate with each other and yet they overlook such a fundamental element as allowing Home Sharing devices to wake the hard drive. It makes home sharing seem redundant if I have to go down stairs and wake my iMac up just to go back upstairs to watch or listen to the required content. I might as well stay down stairs and watch/listen to it on my iMac and save myself all the effort!
The problem seems even annoying that Mountain Lion (which is installed) has not fixed these problems and there has been no Patch either!
Rant over and done with!
The key problem are settings located within the com.apple.PowerManagement.plist file. The full Terminal path is shown below:
/Library/Preferences/SystemConfiguration/com.apple.PowerManagement.plist
the specific key that needs to be changed is :
PrioritizeNetworkReachabilityOverSleep
from value 0 and change to 1
I open the file using vi and make the change but when I come to saving the file it refuses stating read-only use the ! to overwrite.
I enter the :wq! and it reports - unable to save file.
I have tried using the App TextFile to edit file and again on saving Permission denied!
My knowledge of unix, Terminal, vi etc is very limited.
Can someone give me an idiots step-by-step guide of how to change this file or APPLE PLEASE SORT THIS OUT ONCE AND FOR ALL!
Many thanks for all your help
iMac, OS X Mountain Lion (10.8.2)
Posted on Oct 14, 2012 12:03 AM