[CentOS] 8.2.2004 Latest yum update renders machine unbootable

I am running an Intel x64 machine using UEFI to boot an SSD.

Installing the latest yum update which includes grub2 and kernel 4.18.0-193.14.2.el8_2.x86_64 renders the machine unbootable, blank screen where grub should be, no error messages, just hangs.

After some hours I managed to modify another bootable partition (containing older software) and boot it from there.

After that, I  found out it is a known problem.

The main point of this message is to make people aware of the problem and suggest admins don't run 'yum update' until they understand the problem and have a fix at hand.

See 'UEFI boot blank screen post update' for a solution and directions to the redhat article.

Regards

Alan