As it was said above, i am planning on buying a new HDD around 250 GB storage, because my old HDD, which is 1 TB, is really slow as it has been formatted many many times. So, my question is: can i buy a HDD with windows 7 installed so i boot my windows with it, while i have my old HDD (which also has windows 7 in it) as my secondary storage drive? Just to make it a little bit more clear, i only want to boot my windows with the new HDD and save files on my old HDD which also has windows 7 installed. By the way, i don't really want to format again my old HDD..