Initial brief test seems ok
Will see if i can do more of the tests later...
Updated from 8.1 via yum which caused windows 10 & windows 2019 server to hang on the tiano logo.
Interestingly a debian 10 uefi vm worked fine...
After the update to uefistored both windows VMs started in recovery and did whatever it is windows does besides spin dots on your screen
After a reboot both Windows 10 2004 and windows 2019 server booted just fine