MP 1,1-5,1 No boot screen with Gigabyte GeForce GTX 1080 G1

[Sr.Steffypoo]

So I just got a GTX 1080 G1 and it’s in the 2012 Mac 5,1 but there’s no boot screen…where do I go from here? I’m fine staying in High Sierra, I just want to play PC games on one of the other hard drives that has Windows installed on it.

 

[h9826790]

Pre-OpenCore GOP support for EFI-era iMacs and Mac Pros

You wait ten years for a driver to enable pre-boot graphics on unsupported GPUs in EFI era Macs, and then two come along at once... This post is to announce a firmware driver to enable the native Apple boot picker and early macOS boot progress bar (plus other parts of the firmware UI: target...

forums.macrumors.com