How can I install a guest system on a physical drive/partition in virtualbox running on a Windows host ?
To use a physical disk drive directly in Virtualbox you need to first create a special vmdk file to reference the physical drive and then assign the vmdk file as a drive to your VM. Section 188.8.131.52 of the VirtualBox user manual shows how to create the vmdk file. More info here: http://agnipulse.com/2009/07/boot-your-usb-drive-in-virtualbox/
This section provided all info I needed to do this