2018 Macbook Pro not able to install Mojave

Discussion in 'macOS Mojave (10.14)' started by allanmulwee, Jan 7, 2019.

  1. allanmulwee macrumors newbie

    allanmulwee

    Joined:
    Nov 25, 2017
    #1
    So a customer brought in a 2018 Macbook Pro that he had wiped and wanted to do a fresh install of Mojave from a thumb drive. He has a firmware password on the laptop. Guess what? Not possible. The T2 chip blocks everything and requires another machine with a T2 chip to connect to it in order to make this happen. The good old days of swapping drives, booting from thumb drives, installing OS via target disk... are coming to an end.
    --- Post Merged, Jan 7, 2019 ---
    and yes he has the firmware p/w
     
  2. Bending Pixels macrumors 65816

    Joined:
    Jul 22, 2010
    #2
    It's an added security measure. You can reinstall Mojave via internet restore
     
  3. allanmulwee thread starter macrumors newbie

    allanmulwee

    Joined:
    Nov 25, 2017
    #3
    That didn't work either. You need another T2 machine to connect it I believe and we don't have one in the shop yet.
     
  4. chabig macrumors 601

    Joined:
    Sep 6, 2002
    #4
    Why not remove the firmware password and then install Mojave?
     
  5. internetrando macrumors regular

    internetrando

    Joined:
    Jun 5, 2018
    Location:
    Texas
    #5
    You need to disable secure boot.

    He will need to create an admin account on whatever software can be installed, boot into recovery, remove secure boot in the f/w security utility, then boot into USB.
     
  6. oatman13 macrumors regular

    Joined:
    Feb 14, 2013
    #6
    Hold down: CMD+OPTION+R on boot to start up Internet Recovery.
    If there is no image on the system or no local recovery to boot from then the only place you can boot is internet recovery.

    Unless the system has "allow external boot" enabled; which it sounds like it doesn't.
     
  7. CoastalOR macrumors 68020

    CoastalOR

    Joined:
    Jan 19, 2015
    Location:
    Oregon, USA
  8. Fishrrman macrumors G5

    Fishrrman

    Joined:
    Feb 20, 2009
    #8
    OP wrote:
    "So a customer brought in a 2018 Macbook Pro that he had wiped and wanted to do a fresh install of Mojave from a thumb drive. He has a firmware password on the laptop. Guess what? Not possible. The T2 chip blocks everything and requires another machine with a T2 chip to connect to it in order to make this happen."

    Yes, that's the way it works now.

    The solution is to take the laptop to a brick n mortar Apple Store genius bar, and they will "put it right".

    WARNING!
    Unless the customer has HIS ORIGINAL SALES RECEIPT, Apple WILL NOT do this for him.

    In that case, he'd better start looking for a new laptop.
    And... if it's a Mac laptop... he'd better be durned careful about what he does with it "next time"...
     

Share This Page