Usually the update of package grub goes without issue.
The pacman output will inform you to run commands
grub-install and grub-mkconfig with their proper parameters.
If you are not sure what to do exactly, here’s some tips when grub updates:
- Look at your install log at
/var/log, fileendeavour-install.logorCalamares.log. Search for grub-install in either of the log files, it will tell you how grub was installed originally. With this info you can create the propergrub-installcommand.
Note that this applies only if you haven’t changed the bootloader stuff in any way. - For EFI systems, simple
grub-install --no-nvrammight be enough too.
If you happen to reboot the system before doing the things above, you may need to arch-chroot into the installed system and use the tips above.
See our wiki (Discovery) pages about how to arch-chroot.