Two days ago I entered Windows 7 and updates were already downloaded. I am somewhat paranoid, and that bothers me.
I am getting ready to dismantle MS, but until then, someone let me know.
In such a case the answer is simple NO.
When you start the computer and boot into an Operating System (OS) without using any sort of Virtual Machine (VM), there is no possible way that another OS could run simultaneously.
The CPU will be used by whatever OS you booted into, and no threads/process of another OS that is not running could be processed.
I don't know what else could I say, it is just impossible.
About the updates, Windows is very intrusive. You have to set several configurations to guarantee that no updates are download/installed. But that is not my field :)
