Desde un live cd.
sudo mkdir linux sudo mount /dev/sdXY linux/ sudo mount -t proc /proc linux/proc sudo mount --bind /dev linux/dev sudo chroot linux/
grub-install /dev/sda
el grub está aca
sudo gedit /etc/default/grub
Reparar GRUB
Archived thread 2061959 from Uruguay Team. Markdown source: Uruguay_Team/thread_2061959_Reparar_GRUB.md