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Repair Grub from Live Iso (EFI-Systems)

Boot up with antergos:rescue ISO

mount System to /mnt

You need to know which device is the right one check with

sudo fdisk -l

sudo su

/dev/sdXn should be replaced with the right device information!

mount /dev/sdXn /mnt / root partition

mount /dev/sdXn /mnt/boot boot partition

mount /dev/sdXn /mnt/boot/efi the EFI-boot (fat) partition

arch-chroot /mnt

BUT that grub is not in the boot list can be caused also by EFI-Boot-Settings not related to Grub and Antergos then, so re-/installing-/building grub may not solve your problem…

You can also make sure to get second (dual boot) installation rechecked and put into grub boot menu:

(as root also) If you have dual-boot os-prober may takes a long long time to work, the trick here is to mount all other partitions, before using it.

grub-mkconfig -o /boot/grub/grub.cfg

Reinstall grub:

grub-install –target=x86_64-efi –efi-directory=/boot/efi –bootloader-id=Antergos-grub

grub.txt · Last modified: 2018/03/11 19:56 by joekamprad