Boot MacOS on external disk - default

Discussion in 'macOS High Sierra (10.13)' started by Demovx, Jan 3, 2018.

  1. Demovx macrumors member

    May 12, 2015
    I have a qestion.

    I have iMac with usb external disk with MacOS High Sierra. ( No APFS ).
    When i power up imac, i see black screen. After 10 seconds, the apple logo appears and the booting from the external usb disk. All works fine but i need boot default from external USB ( save the 10 seconds ;p )

    My internal disk is clean - no MacOS On this drive.

    Can i change in terminal or other app this setting?

    In my settings> start disk> i have only my external disk. ( MacintoshHD macOS 10.13.2).
  2. m4v3r1ck macrumors 68020


    Nov 2, 2011
    The Netherlands
    But did you SELECT - flag / highlight - your USB as macOS startup disk, otherwise your Mac will still do a search on all internal/external HDD/SSD ports.

  3. Demovx, Jan 4, 2018
    Last edited: Jan 4, 2018

    Demovx thread starter macrumors member

    May 12, 2015

    And second screen on my terminal

    Attached Files:

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