Startup confusion

Discussion in 'macOS Sierra (10.12)' started by blackxacto, Jul 24, 2017.

  1. blackxacto macrumors 6502

    blackxacto

    Joined:
    Jun 15, 2009
    Location:
    Middle TN
    #1
    17,1 iMac, 10.12.6, I have two external backup drives. 1 external drive has a bootable partition w 10.12.6. Somehow my iMac decides to restart from this external partition, rather than my main Sierra fusion drive. How can I remind the iMac to start from its fusion drive, rather than this external partition without holding OPTION.

    It's like the iMac has forgotten what is the main hard drive.
     
  2. Taz Mangus macrumors 68040

    Taz Mangus

    Joined:
    Mar 10, 2011
    #2
    Go into System Preferences->Start Disk and select the Fusion drive.
     
  3. blackxacto thread starter macrumors 6502

    blackxacto

    Joined:
    Jun 15, 2009
    Location:
    Middle TN
    #3
    Thank you very much. I remember now. I used to do this in System 9 and such, years ago. How soon I forget.
     

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