DI WU

My solution for USB kbd issue with BigSur on LGA775: boot into -s single mode to let usb-keyboard worked, then just exit to complete macOS loading and it worked for me.

Clover worked good for my Xeon E5440 on hp dx2810 with HS and Catalina, but it stuck on grey screen with frozen mouse when I tried Big Sur beta Installer. I managed a Opencore BIOS USB which worked for HS and Catalina, but stuck at [EB][EXITBS] for Big Sur beta Installer with im144 and mp61 while it can deny im142 and mp31.... You can try it. config.plist.oc063.775.im144.zip