Boot FileVault without EFI

[MoerBoer]

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

 

[DearthnVader]

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

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.

 

[bsbeamer]

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.