OSX Virtualization (Empty disk question)

Hello,

I'm quite a newbie in this. I wanted to virtualize OS X Lion on windows, just to mess around and try it out if I wanted tu buy a Mac in the future.

I was using this tutorial http://techexxpert.blogspot.sk/2011/08/how-to-virtualize-os-x-lion-on-windows.html

And I have a question about step 11. Can this process erase any data on my hard disk? I have a lot of important data on my PC so therefore I'd like to ask.

Thanks for response.

I appologize if I posted my question ina wrong section, it's quite hard to navigate here ^^