I decided to install Ubuntu as my primary OS on my Retina MacBook Pro (2012), but sadly after installation it does not boot into the OS. Instead, I get the message "no operating system found". I only want to have Ubuntu installed on my system.
During installation I just let Ubuntu partition the drive and create all the necessary parts itself. OpenSUSE boots fine, but it does not work well with MBP, and I personally prefer Ubuntu.
Need some help from the Pros!
p.s. I installed 13.04.