Hello, I guess that very think is more or less, OK, I have just some difficulties to understand the logic. > How does the efi firmware decide which /boot/efi to use as the source when > the computer is started
I realized that I have only one EFI System Partition on sda By default, the system goes to grub, where I can choose the OS. I do not use the efi options to go there (at least intentionally). > Does it have to be selected from the efi firmware menu at each boot? I do not think so. As I said, I go directly to the grub menu (by default). I guess that if I active the efi menu, I could choose other options to boot. =========================================================================== Patrick DUPRÉ | | email: pdu...@gmx.com Laboratoire interdisciplinaire Carnot de Bourgogne 9 Avenue Alain Savary, BP 47870, 21078 DIJON Cedex FRANCE Tel: +33 (0)380395988 =========================================================================== > > On Mon, 1 Jun 2020 10:10:41 -0400 > Jonathan Billings <billi...@negate.org> wrote: > > > 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. > > > You seem knowledgeable, so I'll ask you. How does the efi firmware > decide which /boot/efi to use as the source when the computer is > started? Does it have to be selected from the efi firmware menu at > each boot? > _______________________________________________ > users mailing list -- users@lists.fedoraproject.org > To unsubscribe send an email to users-le...@lists.fedoraproject.org > 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@lists.fedoraproject.org > _______________________________________________ users mailing list -- users@lists.fedoraproject.org To unsubscribe send an email to users-le...@lists.fedoraproject.org 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@lists.fedoraproject.org
