Not able to boot into Fedora

Ask Fedora
1

So i am dual booting windows 11 and fedora 36, and have been for a few months, but a few days ago, the grub menu where i select which OS i want to boot into, disappeared. I’ve been trying to manually reinstall grub from a live ubuntu usb stick, and using the boot repair tool, but nothing has worked. In the report from the boot repair program (pastebin.ubuntu.com/p/nbjGHkTmwd/), there is only one registered OS, which is windows.
So what should i do from here?

3

According to the report there is no boot entry for fedora in the uefi. You can manually create one from the usb stick: sudo efibootmgr -c -d /dev/nvme0n1p5 -p 1 -L Fedora -l '\EFI\fedora\shimx64.efi'

4

Thanks for the response.
I’ve tried doing this, but when i choose the Fedora boot option, i just get booted into windows 11.
Also the bootloader isn’t grub, the grub boot loader menu has disappeared. When i try to boot in to fedora, i turn on my computer, and press f10, f11 and f12 (not sure which of those it is, so i just press all of them) to get to a menu where i can choose what to boot (or go into the uefi/bios). Doing what you said, there now is an option for Fedora, but it just boots me into windows 11.

5

You can probably change the boot order in your bios settings

6

Doesn’t change anything unfortunately.

7

It sounds like a windows update overwrote grub with the windows boot loader.
I would suggest that you boot to a live USB media then mount and chroot to the installed system and reinstall grub.

  1. boot to the live USB
  2. open a terminal window and su to root
  3. mount the root file system at /mnt
  4. mount /boot at /mnt/boot
  5. mount /boot/efi at /mnt/boot/efi
  6. for dir in proc sys dev run; do mount -o bind "/$dir" "/mnt/$dir" ; done
  7. chroot /mnt
  8. dnf reinstall grub*
  9. grub2-mkconfig -o /etc/grub2-efi.cfg

Then reboot and grub should be properly restored.
Once the reboot is complete please also do a dnf upgrade to make certain everything is completely up to date.

8

You should also re-install the shim packages.

By the way, instead of the chroot song and dance you can use the “–installroot” option to dnf.

dnf --installroot=/mnt reinstall ‘grub*’ ‘shim*’

And don’t forget the wildcards needs quoting here.

9

That works, but the user still must follow the steps and mount all the partitions as already stated before using that command.