Let's start with a tutorial link:
http://blog.csdn.net/bychen623/article/details/53543465
This is a very detailed tutorial.
I write about my installation process problems and solutions:
In this step, the author suggests selecting "Other options"
But I appeared in the installation of two areas after the completion of the space is not available, do not know how to resolve, and there is no "keep bibos boot area" option.
But anyway, the installation is done. As a result, the boot directly into Windows, the reason is the production of the startup USB flash drive, after the installation of the system requires a reboot, unable to complete the boot setting, and then boot directly into Windows, no modification opportunities.
Online Recommended use ntboot Autofix software repair boot: Automatic repair No matter, advanced will not be used.
Workaround: Install the Ubuntu file space "Delete volume", reinstall, choose Automatic installation (at that time in the installation system, do not know how, anyway, you can certainly understand).
And then it worked out.
Install Windows and Ubuntu dual system