10.12.2 black screen after upgrade

Discussion in 'macOS Sierra (10.12)' started by al404, Dec 14, 2016.

  1. al404 macrumors 6502

    al404

    Joined:
    Apr 24, 2011
    Location:
    Novara, Italy
    #1
    Just upgraded to 10.12.2 my mac mini late 2012 now when i boot i end up on a complete black screen, monitor is on and i can see and move the cursor ( a black arrow with white border ) but i never loads the UI

    I got to recovery and repair disk and after reboot it did not make any difference
    I reset the PRAM no success

    I just booted into safe mode with shift key pressed, i got to login screen but if boot into my user account it end to black screen again, i may try to boot in guest I would like to try to download combo and install over

    what does "reinstall macos" do in recovery? would i lose anything?
    it a known issue ?
     
  2. ArtPiCard macrumors newbie

    Joined:
    Dec 15, 2016
    Location:
    Lima, Peru
    #3
    I had the same problem today. All day long trying and failing... I tried resetting NRAM, SMC, disk repair, safe boot and so on. Nothing worked.
    Finally, I entered Recovery Mode and restored to the previous version of Sierra from my Time Machine external drive (fortunately I had it updated and perfectly working). It took very long but my MBP seems to be running ok for now.
    I have a MacBook Pro 2013.
    Is this happening to anybody else? Is this a problem with that last Sierra update? Is my MBP too "old" for that update? Any comments? Any advice?
     
  3. Cardsnk macrumors regular

    Joined:
    Jul 18, 2013
    #4
    try to enter your password twice at login (assuming you are in desktop), even if the cursor is the only one showing.
     
  4. ArtPiCard macrumors newbie

    Joined:
    Dec 15, 2016
    Location:
    Lima, Peru
    #5
    So, you think customers should install (or reinstall in my case) the new Sierra update anyway, accept that absurd failure and simply use that trick? Or should Apple send a new update as soon as possible?
     

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