Is the /boot/grub2/grub.cfg file relevant on Rocky Linux using EFI? On all my system (efi and classic) I usually use grub-mkconfig -o /boot/grub2/grub.cfg on Rocky Linux 8 I see on efi the grub.cfg is located on /boot/efi/EFI/rocky/grub.cfg Is the file /boot/grub2/grub.cfg useless on Rocky Linux using EFI?

Do not know Rocky.

UEFI boots using the ESP. Normal boot process with grub is that UEFI uses file in ESP defined by GUID/partUUID. see


sudo efibootmgr -v


And then grub in ESP uses grub.cfg for most installs to find the full grub.cfg in your install using UUID. If you have lsblk


lsblk -e 7 -o name,fstype,size,fsused,label,partlabel,mountpoint,uuid,partuuid