Mounting EFI failed Error OS X Sierra

Discussion in 'MultiBeast Bug Reports' started by sellerben, Dec 14, 2016.

  1. sellerben

    sellerben

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    Dec 14, 2016 at 5:49 AM #1
    sellerben

    sellerben

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    Dec 14, 2016
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    I am trying to install USB 3.0 compatibility drivers on my MacBook Pro 17 2011, just purchased a USB 3.0 PCI Express card and was recommended to me I use this program to install the drivers. I am running OS X Sierra on a 2.5 GHz Intel Core i7 with an
    AMD Radeon HD 6770M 1.2GB

    I select "Third Party USB 3.0" and got to build; it throws me the installation failed error with this log:

    12/14/16 00:32:21 - Starting MultiBeast 9.0.1-20161010

    12/14/16 00:32:37 - Mounting EFI

    12/14/16 00:32:37 - Mounting EFI failed. Exiting.

    I have already tried restarting, reinstalling, and I am running as an administrator; no luck. Much help is appreciated...
     
  2. Obvious Answer Man

    Obvious Answer Man Super Moderator

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  3. jeffw9

    jeffw9

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    May 19, 2017 at 11:17 PM #3
    jeffw9

    jeffw9

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    Oct 19, 2015
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    Sorry, I am experiencing the same issue. What was the obvious answer?
     

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