2014 Mac Mini issue

Discussion in 'Mac mini' started by macsforme, Dec 21, 2016.

  1. macsforme macrumors member

    Mar 16, 2007
    My issue on my 2014 Mac Mini mid-range:

    1. Plug in a Windows USB stick, and boot up the mac while holding down the option key; the boot menu shows my regular options, plus "Windows."
    2. Do the same thing, but reset the NVRAM first; on the first boot up after resetting the NVRAM, the boot menu shows my regular options, plus "Windows," plus "EFI Boot," which is what it's actually supposed to do (I think).

    Can anyone with a similar machine confirm if they have the same issue, where the EFI boot option doesn't come up unless you reset the NVRAM first? Trying to determine if it's a hardware issue with my machine or a firmware issue affecting this model.
  2. Midgetinabikini macrumors regular

    Aug 1, 2006
  3. Kaida macrumors regular


    May 28, 2016
    I experienced the same thing as you on my CTO 3.0ghz. Was thinking with the previous build and settings on the NVRAM, it only allows CSM boot. But when you clean the NVRAM, it allows UEFI boot?

    I'm running macOS Sierra 10.12.2, bootcamp with Windows 10 1607 14393.576 already shows UEFI under msinfo32 so im assuming its on UEFI already?
  4. macsforme thread starter macrumors member

    Mar 16, 2007
    The issue is when you hold down option on boot up with a Windows Installer USB stick plugged in, it only gives you the option to boot the installer in BIOS mode. When you reset the NVRAM, it also gives you the option to install in EFI mode (which is what I wanted).

    Yeah, it's a weird issue... but it's good to know that it affects other similar machines and my hardware isn't broken.

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