Does the imac have any resistance for a power failure ?

Discussion in 'iMac' started by bo-waleed, Mar 11, 2011.

  1. bo-waleed macrumors 6502

    Joined:
    Oct 15, 2009
  2. old-wiz macrumors G3

    Joined:
    Mar 26, 2008
    Location:
    West Suburban Boston Ma
    #2
    Power failure causes immediate shutdown. There is no battery in the iMac. If power failures are frequent get a UPS.
     
  3. djc6 macrumors 6502

    Joined:
    Aug 11, 2007
    Location:
    Cleveland, OH
    #3
    If you do buy a UPS, try and get one other users have reported works with MacOS X. I purchased a Tripp Lite OMNI900LCD and I cannot get the auto-shutdown to work via the USB port. It also doesn't reliably report the amount of time left on the battery/etc.. It does allow the computer to run for about 15 minutes, but it won't gracefully shut down the machine.
     
  4. talmy macrumors 601

    talmy

    Joined:
    Oct 26, 2009
    Location:
    Oregon
    #4
    I haven't tried it, but you should be able to set hibernatemode to 3 which saves the system when going into sleep mode and recoversif there is a power loss. Normally used for notebooks (and the default for some years now) but should also work on an iMac.


    Here's an article (aimed at MacBook owners)
     
  5. Stan Mikulenka macrumors 6502

    Joined:
    Nov 20, 2009
    Location:
    Calgary, Canada
    #5
    Hi,
    I have one but stopped using it since it had a negative effect on my computers.
    I guess because the power line fluctuates (brown-outs) too much where I live (Calgary, Canada),
    I had a warning &/or a shut-down every week - as opposed to before that NEVER happened...
    So here is one example for that something 'safer' doesn't actually work.
     
  6. panzer06 macrumors 68030

    panzer06

    Joined:
    Sep 23, 2006
    Location:
    Kilrath
    #6
    If you don't use the software UPS units are great. We have occasional power glitches but power rarely goes out completely. No need to use the auto shutdown software in most cases.

    Cheers,
     

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