Has anyone faced a similar Problem?
I got the same and frustratingly wasn’t able to select one of the options. I ended up deleting the file and creating a new one with:
sudo rm /boot/grub/menu.lst
sudo update-grub-legacy-ec2 -y
sudo apt-get upgrade
after reading https://serverfault.com/questions/645566/a-new-version-of-boot-grub-menu-lst-is-available-when-upgrading-ubuntu-on-an
Hope that helps.