Mac Mini external SSD boot issue with Sierra

Discussion in 'Mac mini' started by al404, Sep 24, 2016.

  1. al404 macrumors 6502

    al404

    Joined:
    Apr 24, 2011
    Location:
    Novara, Italy
    #1
    My mac mini boots from an external SSD connected via USB 3.
    Didn't have any issue until i upgrade to Sierra.

    Most of the times i boot it load the white bar under Apple logo till 30% - 50% and after that it never boots in system i have to force shut down holding power button and boot again.

    Some time i need to do it 2 / 3 times before i can actually boot.
    I hear a disk spinning not sure if an external hard drive or internal hard drive.

    What could it be? Any one with same issue?
     
  2. Partron22 macrumors 68020

    Partron22

    Joined:
    Apr 13, 2011
    Location:
    Yes
  3. al404 thread starter macrumors 6502

    al404

    Joined:
    Apr 24, 2011
    Location:
    Novara, Italy
    #3
    straight to Mac but i also have TM and an other WD USB3 HDD
     
  4. Fishrrman macrumors G5

    Fishrrman

    Joined:
    Feb 20, 2009
    #4
    Temporarily disconnect the other drives, to see if the problem persists using only the single external boot drive.
     

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