MP 1,1-5,1 Mojave Metal Error on MP 5,1 (External Media)

[ouimetnick]

I have a bootable USB drive (external hard drive) that I use to perform clean installs on macOS Mojave 10.14.6 on my Macs. When I boot off of this drive and try to install Mojave on my 2012 Mac Pro, I get an error that I need a metal compatible graphics card and file vault turned off. I have a Nvidia GeForce GTX680 flashed for Mac, so I'm not sure why I'm getting this error. I currently have Mojave installed on the computer (I put the SSD in a 2012 MBP and installed Mojave that way)

The strange part is with the computer booted into Mojave, I can run the installer and install it on a hard drive in another bay. System Profiler says that my GPU supports Metal with feature set macOS GPUFamily1 v4.

The annoying way to do a clean install on this SSD would be to install Mojave onto the HDD in slot 2, and then boot off of that, wipe and reinstall Mojave onto the SSD in slot 1.

Rather than do that, does anyone have an solution and answer as to why I'm seeing that error message? I've attached a few screenshots. I just want to be able to boot off the external USB macOS Mojave installer drive I've used in the past to do a clean install..

 

[tsialex]

I have a bootable USB drive (external hard drive) that I use to perform clean installs on macOS Mojave 10.14.6 on my Macs. When I boot off of this drive and try to install Mojave on my 2012 Mac Pro, I get an error that I need a metal compatible graphics card and file vault turned off. I have a Nvidia GeForce GTX680 flashed for Mac, so I'm not sure why I'm getting this error. I currently have Mojave installed on the computer (I put the SSD in a 2012 MBP and installed Mojave that way)

The strange part is with the computer booted into Mojave, I can run the installer and install it on a hard drive in another bay. System Profiler says that my GPU supports Metal with feature set macOS GPUFamily1 v4.

The annoying way to do a clean install on this SSD would be to install Mojave onto the HDD in slot 2, and then boot off of that, wipe and reinstall Mojave onto the SSD in slot 1.

Rather than do that, does anyone have an solution and answer as to why I'm seeing that error message? I've attached a few screenshots. I just want to be able to boot off the external USB macOS Mojave installer drive I've used in the past to do a clean install..

Know and unresolved problem since the first betas of Mojave, GTX 680 and other Kepler cards are not recognised as METAL supported GPUs when booting from USB with a MP5,1 and you have to clean install from macOS to a second disk.

This problem is documented on the notes:

MP5,1: What you have to do to upgrade to Mojave (BootROM upgrade instructions thread)

Please fully read this first post, you will probably find that you have one or more problems described into the various notes below. Mojave will only install if you have upgraded your BootROM to the current release and your Mac Pro have a Metal capable GPU*. If you are trying to install Mojave...

forums.macrumors.com

 

[ouimetnick]

- Kepler NVIDIA GPUs (GT 640/740, GTX 670/680/780, Quadro K5000) note:

If you have a supported NVIDIA Kepler GPU like GTX 680 Mac Edition card, GTX 680 flashed with the Mac Edition firmware, GT 640/740, GTX 670/770/780 or a Quadro K5000 you can't do a USB clean install with it at the moment. The USB installer don't detect that the GPU is a Metal supported card and don't continue the install, it's a bug with Nvidia Kepler GPUs.

To do a clean install, do from macOS with two drives - just select your empty one when doing the install.

That's what I'm doing now. I just took the bootable usb hard drive and put the drive into bay 2, and booted off of that and got the same error, so now I'm just using the installer from the applications folder while booted into macOS Mojave on the SSD to install it into the drive in bay 2. Then i'll format the SSD in bay 1 and reinstall. Strange how Apple never fixed that bug.