I have a Mac Pro 5,1 with High Sierra. I decided to swap the original Nvidia GT 120 video card for Asus Radeon HD 7870. It booted fine, but obviously without a boot screen. I decided I could fix it by installing OpenCore with custom settings.
So I downloaded the OpenCore GUI app, went to Settings > Advanced, ticked AMD GOP Injection (presumably, that should have enabled the boot screen), and then, together with other OCLP setup for the HOST system, I installed it to may main EFI partition.
After reboot I got the crossed out circle and no further access to the installed High Sierra.
Why did it happen?
How can I revert OCLP from my EFI boot partition without reinstalling the whole OS?
Post a Comment