René composed on 2025-09-25 14:35 (UTC+0200): > Prior to full reinstallation of both Fedora and Opensuse triple boot > worked perfectly with Fedora, Opensuse and Windows 11. After these > reinstalls I can't operate triple boot.
Keyword: "full reinstallation". 1-Some of your efibootmgr entries probably became obsolete upon reinstallation, and should be excised from NVRAM, and if they still exist on ESP, from there too. 2-Both openSUSE and Fedora stopped using standard grub2-efi by default a while back (Debian more recently). Do you still have grub2-efi installed and in use on both? On one or the other only? On neither? Other options include systemd-boot and grub2-bls. 3-Are kernels and initrds installed in /boot/ directly in both, or do one or the other or both put them on the ESP? 4-Grub upstream switched to configuring GRUB_DISABLE_OS_PROBER="true" as default in /etc/default/grub, and this upstream config retained by both Fedora and openSUSE, so if you are using Grub but don't change this to false, os-prober won't be employed in generating grub.cfg. All my PCs are multiboot. All include openSUSE. Most include Fedora. All using EFI are booting only from openSUSE Tumbleweed's grub2-efi via /boot/grub2/custom.cfg created and maintained exclusively by me using my plain text editor, which is called by /etc/grub.d/07_custom, which places all custom stanzas at the head of the boot menu, and is a copy of /etc/grub.d/41_custom, described in more detail on <https://forums.opensuse.org/t/how-to-have-a-custom-uefi-grub-menu-for-a-multiboot-system/133541>. -- Evolution as taught in public schools is, like religion, based on faith, not based on science. Team OS/2 ** Reg. Linux User #211409 ** a11y rocks! Felix Miata
