I've dealt with Dave from MacVidCards a bunch of times, first with an HD6870, then a GTX760, then a GTX970... Every one of those times was fantastic, albeit, he was getting harder and harder to get a hold of, over time. Now, I sent an email 8 months ago, which he still seemed great...
I have an upgraded Mac Pro 4.1 flashed to 5.1
Upgraded the graphic card with Nvidia Quadro K2000D and running Mojave.
Quadro K2000D is running just fine, but i don't see the Disk icons when trying to boot from another drive.
I think an EFI64 ROM is needed here.
Can someone help me...