i had a black Screen Of Death on macOS Big Sur 11.01 after boot with High Sierra on a USB hard disk.
And returning to Big Sierra. i got this screen:
This is the second time it happens, Until now i am sure that was the cause.
Big Sur 11.01 boots opencore 0.63 on a SSD PCIE Western Digital...
I have a similar problem the first time when installing after changed the bootloader from clover to Opencore (Cause with clover Catalina never update nor from Installing from USB).
In the first reboot I was in panic!, no sachtarget disk in OC menu. then try with USB, the same thing, but I let...
Since Public Beta 2, I had updated from Mojave 14.6, and had no video acceleration.
My motherboard Asus Z370A Prime (not II) with i3 8100 with UHD 630 (0x3E91),
I used igfx id 0x59120000 and multibeat intel HD 630 since high Sierra and worked.
I konow have tu do some kind of framebuffer work...
Captura De Pantalla 2018-12-07 A La(s) 22.01.39 by anton56 posted Dec 7, 2018 at 10:19 PMAfter Upgrade to Mojave 10.4.2 on one disk, I have this green-purple screenshot. really i don't know what to do to revert it.