I have Ubuntu 14.04 already installed but needed to install Ubuntu 16 on another partition. The installation went smoothly but when I boot now I don't get an option to boot Ubuntu 14 or Ubuntu 16, and my system always boots Ubuntu 14.
When I tried to find the reason behind this I found that the partition on which Ubuntu 16 is installed is not mounted when system start.
Even after editing
fstab to mount the drive, GRUB is still not showing up
How can I make my system ask me OS to boot?