Unless you&#x27;re doing something super screwy, GRUB, the excuse for this backwards default, doesn&#x27;t even need access to UEFI. UEFI booting looks for a file in a FAT-formatted partition of a hard disk with a specific ID -- C12A7328-F81F-11D2-BA4B-00A0C93EC93B for GPT disks and 0xEF for MBR disks. All EFI does is to look for a file BOOTX64.EFI on that partition. There&#x27;s no need to muck around the UEFI settings for this, it Just Fucking Works.