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At Mon, 28 May 2018 19:30:25 -0400 CentOS mailing list <centos at centos.org> wrote: > > On May 28, 2018, at 18:25, Robert Heller <heller at deepsoft.com> wrote: > > > I tried to run efibootmgr, but it wants a model named efivars loaded, but > > there is no such module available. > > Are you not running a CentOS kernel? That module should be available.

...t 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"...

...t 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/s...

...tition 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...