I formatted all of my disk and installed Ubuntu on my computer. I immediately partitioned, from an Ubuntu live CD, my hard drive, creating an NTFS partition for for Windows. After successfully doing so, I went on to install windows 8.1. After I installed Windows 8 in the new partition and turned off my PC and turned it on again the option to chose which Operating system I wanted to use didn't appear, loading Windows like if Ubuntu didn't exist.
How can I have the option to chose which operating system I want to run or at least from which partition to boot from when I start my computer?
EVERYTHING IS OKAY WITH MY OPERATING SYSTEM
The only thing I need is for ubuntu to appear as an option on the boot menus