On Mon, Jun 01, 2020 at 11:20:31AM +0200, Patrick Dupre wrote: > with the -v option, I have > BootCurrent: 0000 > Timeout: 1 seconds > BootOrder: 0000,0002,0001 > Boot0000* fedora HD(3,GPT,a5c3bc11-e83b-48d0-be96-783af37228f1,0x2001800,0xfa000)/File(\EFI\FEDORA\GRUBX64.EFI) > [...] > However, I do not understand how does this work with multi disks. > We have > /boot/efi/EFI/fedora/grubx64.efi > on each disk ? > Which does not seem to be the case. If you see in the Fedora entry, it has: HD(3,GPT,a5c3bc11-e83b-48d0-be96-783af37228f1,0x2001800\ ,0xfa000)/File(\EFI\FEDORA\GRUBX64.EFI) That means to look for a volume with the 3rd GPT partition, with the UUID of a5c3bc11-e83b-48d0-be96-783af37228f1 (and some other data). On that disk, look for the /EFI/FEDORA/GRUBX64.EFI executable (remember, this is a DOS filesystem so it's case-insensitive). Run 'blkid' on a running system, and you'll see that the PARTUUID of the EFI volume matches the UUID in the above EFI entry. You can have an EFI volume on multiple disks. EFI also supports things like network boot, which has a different syntax EFI entry. The efibootmgr command does a lot of the hard work of figuring that out for you, so you don't need to manually enter that information. -- Jonathan Billings <billings@xxxxxxxxxx> _______________________________________________ users mailing list -- users@xxxxxxxxxxxxxxxxxxxxxxx To unsubscribe send an email to users-leave@xxxxxxxxxxxxxxxxxxxxxxx Fedora Code of Conduct: https://docs.fedoraproject.org/en-US/project/code-of-conduct/ List Guidelines: https://fedoraproject.org/wiki/Mailing_list_guidelines List Archives: https://lists.fedoraproject.org/archives/list/users@xxxxxxxxxxxxxxxxxxxxxxx