Prevent external HD from booting

Discussion in 'OS X Mountain Lion (10.8)' started by burnswuff, Aug 25, 2012.

  1. burnswuff macrumors newbie

    Joined:
    Sep 7, 2011
    #1
    I installed Mountain Lion as a partition on my external HD. It also contains my Time machine backups along with two other partitions. However, every time I plug it in, it always opens the ML install drive and asks if I want to install ML. Is there a way to close out of this so that that particular partition does open when plugged in?

    Also, is there a way to hide that specific partition from the desktop?
     
  2. Arelunde macrumors 6502a

    Arelunde

    Joined:
    Jul 6, 2011
    Location:
    CA Central Coast
    #2
    Sounds like the easiest solution would be to drag/drop the ML file to a separate flash and store it there, deleting it from your current external HD.
     
  3. Weaselboy Moderator

    Weaselboy

    Staff Member

    Joined:
    Jan 23, 2005
    Location:
    California
    #3
    Do an option key boot and select the partition/drive you want to boot from. Then go to System Preferences and in the Startup Disk pane select the partition/drive you want to boot from and restart. From then on it will boot from the partition you selected.
     
  4. Arelunde macrumors 6502a

    Arelunde

    Joined:
    Jul 6, 2011
    Location:
    CA Central Coast
    #4
    I just thought of that, but had no idea of how to accomplish it. Thanks for the info - I will save that for future use.
     

Share This Page