Manjaro - Multiboot GRUB2 corrupt
petsam
I know... everything?
1
Jun '18
You use Ubuntu grub, that’s why you have the problem.
Use this tutorial to boot to Manjaro and follow the advice included to fix boot order, setting Manjaro option first.
For most cases (no separate boot, manjaro grub.cfg still good, etc…) this will do.
Start here first.
##################### Simple First Start ########################
boot up livecd in the right mode, uefi or bios-legacy
Do not boot up to live OS, but press ‘c’ at the menu and we’ll get to the grub prompt (grub>).
grub> search.file /etc/manjaro-release root
grub> configfile /boot/grub/grub.cfg
When booted
sudo grub-install /dev/sda
sudo update-grub
Done.
ps: If UEFI and it is a new installation that does not boot after installation, do the 2 “UEFI - Additional Commands” below at end of Step 4.