I have installed VirtualBox and I would like to have a Windows session from within my Kubuntu session. I have my hard drive partitioned so as to contain both OS. However, VirtualBox seems to only suport OS installed from scratch. Whenever I launch a Virtual Session, it prompts me to insert installation mediums. I have looked into the docs and it similarly details how to launch a VM and then prompts you to install an OS.
So my question is, if I already have an OS installed on a different partition on the same hard drive, how can I go about associating that partition with a virtual session? Is it as simple as copying the entire OS (which I seem to have access to from within Kubuntu session) into the Virtual Box directory containing the "Windows Session" I have created within Virtual Box?