I've just upgraded, from 10.15.5. Took about 30 minutes on my system, with two reboots.
can you share your efi pleaseWas flawless for me as well, thanks for confirming before I tried it.
On the other hand, updating my mobo to the latest BIOS (2.80) removed the "Above 4G Decoding" option and seemed to rearrange some other things. That was not a win, so reverted.
Tried to upgrade. On first restart get the following. Any ideas? Can’t seem to find any guidance searching known issues. Recovery mode does not work. Using x570 Gbyte Aurous Master, f20 bios (already confirmed no issues booting with this bios).
can you share your efi please
From my exprience with Gigabyte x570 board, the F11 bios is the best bois so far. I use x570 pro wifi and I had the same issue on F20b with my 5500xt GPU. After switching to F11, I was able to enter the recovery mode and install catalina successfully.
No worries, enjoy your build.This did it! Thank you!