1. yankeebhoy's Avatar
    Hi,

    I tried to do a clean install of High Sierra. The installation looks ok until the MacBook restarts and all I see is a black screen with a white no entry sign. Rebooting it has the same result.

    If I try another install via Mac OS Recovery the same thing happens. However I can install Sierra via Mac OS Recovery. After a clean install of Sierra, I try to install High Sierra and I get the no entry sign again!! Aaargh!!

    Can anyone help me?
    09-26-2017 09:21 AM
  2. yankeebhoy's Avatar
    Solved by doing a reset of NVRAM thanks to Apple support!
    09-26-2017 03:57 PM

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