I just installed Ubuntu 16.04 LTS onto my computer. I installed it on my whole disk, removing Windows. Installation completed and when I restarted my computer, I was not given the option to boot into Ubuntu. I was presented with these options:
Try Ubuntu without installing Install Ubuntu OEM install (for manufacturers) Check disc for defects
The basic option for "Ubuntu" is not showing up. However, if I click on "Install Ubuntu", the installer recognizes that Ubuntu 16.04 is already installed on my computer, and asks if I wish to dual boot along side it, or delete it and re-install.
So my computer has Ubuntu 16.04 installed, I'm just unable to boot into it from Grub menu.