My iMac's local hostname changed automatically?

Discussion in 'Mac OS X Lion (10.7)' started by RedCroissant, Jul 19, 2012.

  1. macrumors 68020

    RedCroissant

    Joined:
    Aug 13, 2011
    Location:
    California
    #1
    Hi everyone. I was about to shut down my iMac when I saw this message pop up on my screen.

    "This computer's local hostname '---- iMac.local' is already in use on this network. The name has been changed to.."........-iMac-2.local'"

    Why would this happen? I did recently upgrade my HDD to a 3TB one and cloned my original drive. Would this be the reason? Thanks for your help.
     
  2. macrumors P6

    Intell

    Joined:
    Jan 24, 2010
    Location:
    Inside
    #2
    This usually happens when a ghost of your machine is on the network. A way to fix it is to uncheck the "Wake for network access" box in the Energy Saver pref pane. This is not something to worry about.
     
  3. thread starter macrumors 68020

    RedCroissant

    Joined:
    Aug 13, 2011
    Location:
    California
    #3
    Hey Intell. Well what you said definitely worked. Thanks!
     
  4. macrumors newbie

    Joined:
    Oct 14, 2011
    Location:
    New Yorker living in Georgia
    #4
    Thank you

    I should have come to this thread three error messages ago. Thanks for an easy fix, Intell.
     
  5. macrumors member

    Joined:
    Oct 22, 2008
    #5
    Worked for me on Mavericks 10.9.1, thanks.
     
  6. macrumors newbie

    Joined:
    Mar 5, 2012
    #6
    If I turn off wake for network access, won't this prevent my PLEX from waking my Mac in order to access my media?
     
  7. macrumors P6

    Intell

    Joined:
    Jan 24, 2010
    Location:
    Inside
    #7
    Possibly, but then again having your machine not sleep may be the best alternative.
     
  8. macrumors newbie

    Joined:
    Nov 19, 2014
    #8
    Did not work for me I'm afraid, on 10.8.5. It may be nothing to worry about, but seeing the same alert every morning gets tiresome.

    :confused:
     

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