On 05/28/2018 06:20 PM, Robert Heller wrote: > The UUID in the BIOS is NOT VFAT volume. It is something completely > different. I have no clue what it is -- it does not correspond to anything I > can find. It should be the UUID of the partition, not of the VFAT volume. The partition UUID is stored in the GPT. The volume UUID is stored in the filesystem header (I believe). For example, on my laptop: # efibootmgr -v | grep Fedora Boot0000* Fedora PciRoot(0x0)/Pci(0x17,0x0)/Sata(2,65535,0)/HD(1,GPT,39484dd8-b1d9-47b2-b4d7-89dfe3ce5e09,0x800,0x12c000)/File(\EFI\fedora\shimx64.efi) # blkid | grep sda1 /dev/sda1: LABEL="ESP" UUID="3850-574E" TYPE="vfat" PARTLABEL="EFI System Partition" PARTUUID="39484dd8-b1d9-47b2-b4d7-89dfe3ce5e09" # sgdisk -i1 /dev/sda Partition GUID code: C12A7328-F81F-11D2-BA4B-00A0C93EC93B (EFI System) Partition unique GUID: 39484DD8-B1D9-47B2-B4D7-89DFE3CE5E09 First sector: 2048 (at 1024.0 KiB) Last sector: 1230847 (at 601.0 MiB) Partition size: 1228800 sectors (600.0 MiB) Attribute flags: 0000000000000000 Partition name: 'EFI System Partition'