Dual Booting Question

[Crawl]

Ok,

So I am planning on dual booting my existing Windows 7 PC with OS X Yosemite, and as of this moment all I have done is created the flash drive with Yosemite on it using UniBeast.

The question I have is am I able to install Yosemite on my already existing Windows 7, if not; Will I need to 'download' Windows 7 again, or can I use my existing serial key and disc?

Thanks

 

[Adult]

As long as you only create a second partition when installing Yosemite. you can easily dual boot. When you load your PC it will ask you which OS you wish to load, then pick. Goes like this:

Install Yosemite onto USB
Boot from USB
Install yosemite onto a new Partition
Restart PC


Now, you will be at a boot screen with two options, Yosemite and Windows 7. Pick whichever.