Boot FileVault without EFI

Discussion in 'Mac Pro' started by MoerBoer, Jun 8, 2018.

  1. MoerBoer macrumors member

    Joined:
    Jan 27, 2018
    #1
    I'm playing around with some old cards I have to test Metal for the upcoming Mojave release.

    My old GT 710 actually shows Metal compatibility which is great, but I need to run both my HD 5870 and the GT 710 to be able to boot.

    My M.2 drive ( boot drive ) is encrypted with FileVault and thus on boot it pops up with the password question.

    When I only put in the GT 710, the boot chime goes , then it waits for a couple of seconds and chimes again ( thus another reboot ). I wait a considerable time, and then try typing in the normal password via an USB keyboard, but nothing happens.

    Is there anyway around this, or am I always going to be stuck with having to run the HD 5870?

    I have a 5.1 Mac Pro
     
  2. DearthnVader macrumors 6502a

    DearthnVader

    Joined:
    Dec 17, 2015
    Location:
    Red Springs, NC
    #2
    Not really a good way round this right now, Filevault2 is an EFI environment so you need an EFI rom for your GFX card. If we can get GOP( Graphics Output Protocol ) working on Classic Mac Pro's then it would work if you card has a GOP rom.

    Apple used the older UGA( Universal Graphics Adapter ) on cMP. Some work is being done with NextLoader to support GOP, if we can find a solution that works we should be able to add the GOP driver to the cMP's firmware.
     
  3. bsbeamer macrumors 68000

    Joined:
    Sep 19, 2012
    #3
    Given the security intentions of FileVault, why would you want to hack with unverified code to enable it? I get the rational trying to enable it, but seems using a legit EFI card is the more secure solution.
     

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