- Create an EFI partition on the boot disk using gdisk. Where it exists on the disk doesn’t matter. The partition should be at least 100MB but >200MB is recommended. It is critical that the partition type is Boot Partition (type ef00).
- Create a filesystem on that partition. It MUST be vfat type 32. A regular vfat format will not work.
mkfs.vfat -F 32 /dev/[partition]
3. Get the UUID of the partition:
blkid /dev/[partition]
4. Change the /boot/efi entry in /etc/fstab to use the 8 CHARACTER UUID (technically not a UUID) from the output of the blkid command. Do not use the standard UUID displayed.
5. Mount /dev/[partition] to /boot/efi
6. If you’re in rescue mode you’ll likely need to bring up networking to reinstall certain packages:
ifconfig [device] [ip address]
ifconfig [device] netmask [netmask]
route add default gw [gateway]
7. Populate the EFI partition by reinstalling these packages:
dnf reinstall shim-* grub2-efi-* grub2-common
The partition should now be bootable. There is no need to use grub-install or grub2-install with EFI.