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Thread: Failed to set MokListRT: Invalid Parameter - I am scuppered!

  1. #1
    Join Date
    Jul 2021
    Beans
    1

    Failed to set MokListRT: Invalid Parameter - I am scuppered!

    Hi all,

    Really need some help.

    I installed Ubuntu 20.04 LTS 4 days ago on an iMac 2008 with Mac OSX 10.6.8 Snow Leopard, as I'd heard was a fantastic upgrade I wanted to try.

    Installed from USB.

    First install= no wifi access; I ran software updates inside Ubuntu. Fixed wifi. Then Firefox froze desktop. Needed reboot.

    On this reboot I got the following message, which persists. Sometimes boots to Ubuntu, sometimes just this message on screen and not further.

    If I hold alt + R on powering up, I get a picture of EFI drive or Time Machine Drive (which is the only drive plugged in). I cannot boot my Mac OS :0(

    I have checked the forums; there is one post of the below. Only resolve is a BIOS issue on a Dell machine but nothing else.

    I'm not a coding / terminal expert, I'm a paramedic and want my Mac back. Please help!

    "Failed to set MokListRT: Invalid Parameter
    Could not create MokListRT: Invalid Parameter
    Importing MOK state has failed: import mok_state() failed: Invalid Parameter
    Continuing boot since secure mode is disabled"

    Thanks everyone,

    Mickie x


  2. #2
    Join Date
    Aug 2006
    Beans
    13,284
    Distro
    Ubuntu Mate 20.04 Focal Fossa

    Re: Failed to set MokListRT: Invalid Parameter - I am scuppered!

    This looks like a known problem with at least some of mymacs, or whaever they are called. Use any one of your favorite search engines to find a solution.
    He is a link to get you started just in case:
    https://askubuntu.com/questions/1279...alid-parameter.

    PS: Ubuntu is not an upgrade to mymac osx.

  3. #3
    Join Date
    Mar 2011
    Location
    U.K.
    Beans
    Hidden!
    Distro
    Ubuntu 20.04 Focal Fossa

    Re: Failed to set MokListRT: Invalid Parameter - I am scuppered!

    Try installing ReFIND as suggested in above link.
    It will install into /boot/efi/EFI/refind
    and complements existing boot installation.

  4. #4
    Join Date
    Feb 2010
    Location
    Obscurial Springs
    Beans
    14,808
    Distro
    Ubuntu Budgie Development Release

    Re: Failed to set MokListRT: Invalid Parameter - I am scuppered!

    Moved to Apple Hardware Users.
    "Our intention creates our reality. "

    Ubuntu Documentation Search: Popular Pages
    Ubuntu: Security Basics
    Ubuntu: Flavors

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