- Apr 5, 2020
- Gigabyte z390 Designare
- Sapphire Pulse RX580
Maybe try booting into a live system? Like a Live Linux USB drive
I was able to fix it by building a new thumbdrive with Open Core Following the mini guide, and using that new thumbdrive to boot. Then I saved my old config.plist, and copied the serial numbers and saved the new thumbdrive config.plist to my computer's EFI Folder and replaced the new numbers from the thumbdrive with the old numbers from my old install. Seems to be working without issue now.