Late 2016 MacBook Pro not booting fromternal driveThis

Discussion in 'MacBook Pro' started by GajieP, Dec 6, 2016.

  1. GajieP macrumors newbie

    Joined:
    Dec 4, 2008
    #1
    IMG_0778.JPG Hi everyone. I just recently got one of the new 2016 13" MacbookPros NTB. I was trying to boot up an external USB 3 drive with Sierra on it and it does not work. I am getting a symbol on my screen for a few seconds and then it just shuts down. I am attaching a pic of the screen. Apologies that it is not that clear. This is happening when I try to boot from one of the USB C ports directly and via USB A with the Apple multi port adapter. I never had this problem when I booted this drive from my MacBook Air. Has anyone seen this before and is this normal?
     
  2. GajieP thread starter macrumors newbie

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    Dec 4, 2008
  3. Shd0w4lkr40 macrumors newbie

    Shd0w4lkr40

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    Dec 8, 2016
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    The Volunteer State
    #3
    I would boot into recovery (Command+R) and re-install Sierra on the external. Perhaps more info would help diagnose.
     
  4. GajieP thread starter macrumors newbie

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    Dec 4, 2008
    #4
    Thank you so much Shd0w4lkr40. That worked. The version of Sierra I had on the external drive was the initial release and was too old to boot on to the new MacBook Pro's. I really appreciate your kind assistance. Thanks again.
     
  5. DarthBradicus macrumors member

    Joined:
    May 13, 2008
    Location:
    Pittsburgh, PA
    #5
    I was just going to mention that. Any given Mac cannot run a version of the operating system older than the one it originally came with. The device-specific drivers, etc. are not in it.
     
  6. Shd0w4lkr40 macrumors newbie

    Shd0w4lkr40

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    #6
    Anytime my friend...I have dealt with similar issues a few times as well with GNU/Linux distros after upgrading hardware. It's definitely frustrating, but I'm glad to hear you were able to resolve the issue. I am going to pick up an external SSD +USB 3 enclosure this weekend and do the same for a dedicated Sierra dev. environment so knowing you've had success is encouraging! Any major issues thus far?
     
  7. GajieP thread starter macrumors newbie

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    Dec 4, 2008
    #7
    No major issues so far. All is well. Again appreciate your assistance.
     

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