Last time I installed Windows on my from a DVD it was a nightmare. I NEVER want to repeat it. There were multiple issues with that. The first one was that it just refused to install itself on the NTFS partition. Neither did formatting option work. So in the end I solved it by wiping the Ubuntu installation and I do not want to do that again.
So how can I use virtualbox to boot the DVD and then use the booted installer to install Windows on a partition on the physical hard disk?
I tried adding the NTFS partition (/dev/sda5) as a virtual drive to the virtualbox machine (that booted from the DVD) but it was invisible for the installer for some reason.