- Feb 23, 2020
- Gigabyte Z390 M Gaming
- RX 5700 XT
- Mobile Phone
If you copied the EFI folder from the EFI partition of your USB flash drive to the EFI partition of your boot drive, BIOS should see it.
Make sure that, in BIOS, you have the system to boot in UEFI mode.
Yeah that's exactly what I did. I already disabled the legacy boot option. Here's what it looks like:
Strange having a blank option that does nothing but refresh this screen when clicked.
I've had this build set up with Catalina stable for a long time before I decided to reinstall. Maybe it's the BIOS itself corrupted somehow. I did reset NVRAM some time ago and it screwed up my boot options then too, like having no option to boot Windows, however I'm not sure what I did to fix it or if it just started working again. Very strange, everything else works like a dream with Big Sur other than having to boot with a USB stick.