For some time now I have gotten a slow but steady volume of requests that I write about UEFI firmware and EFI boot relative to installing and maintaining Linux. As a result of a casual comment I made ...
I also have an option 'CSM Support'. When 'Enabled' it allows configuration of three new options: "LAN PXE Boot Option ROM (Disabled/Enabled)", Storage Boot Option Control (Disabled/UEFI Only/Legacy ...