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. -- Jonathan Billings <billings at negate.org>