On Fri, Apr 03, 2020 at 09:40:09PM +0300, Georgios wrote:
Yes
dmesg | grep "EFI v" [ 0.000000] efi: EFI v2.70 by American Megatrends
That's not always the best test, you should look for the existence of /sys/firmware/efi to determine if you're using an EFI system.
'grubby' knows to update the configuration file for Legacy vs. UEFI.