Re: Reinstalling the bootloader

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On Tue, Apr 8, 2014 at 4:49 AM, Adam Williamson <awilliam@xxxxxxxxxx> wrote:
On Mon, 2014-04-07 at 20:20 -0400, Corey Sheldon wrote:
> its now grub2-install /dev/sdX

It's not for UEFI.
--
It would be good if someone who knows something could rewrite the GRUB_2 wiki page to
say that. And to stop referring to a release of Fedora that is no longer supported.  The
Unified Extensible Firmware Interface wiki page is rather outdated and unhelpful as well.
Surprisingly, the best information I could find about efibootmgr is in a page that is
actually about Fedup.

Here's what I've discovered:

If you have UEFI and you have run grub2-install, you need to un-do that by re-installing
grub2-efi:

yum reinstall grub2-efi

And since Windows on my system places itself first in the EFI boot list every time it
is booted, you need to run

efibootmgr -v   # (to learn Fedora's boot number)
efibootmgr -o <boot#1>,<boot#2>,...  # (to choose which system you want to boot by default)

If you want to see how Anaconda originally ran efibootmgr, you can look at
/var/log/anaconda/anaconda.program.log

Fred


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