I am trying to have a dual boot Ubuntu with Win 7 on my laptop.I face a problem i couldn't understand.After I free a space(about 11GB) for Ubuntu installation, I couldn't find it when i try to install Ubuntu from a DVD.I couldn't specify the problem reason is it due to my Hard drive partitioning or not. My hard drive volumes (Partitions) are all simple volume not primary. here a snapshot of my disk management http://oi42.tinypic.com/dpd7oj.jpg here is how i find my hard drive during installing Ubuntu http://oi44.tinypic.com/21b9fs4.jpg instead of finding my volumes with the free space.
Could any one help me how to solve this problem or even declare the problem for me in a more detailed view.is it the simple volumes problem or something else.