What it says will depend on exactly where you got the disc. If it was an official Microsoft upgrade or new software, then it will be this really shiny holographic looking disc. If you bought the computer with the current operating system, you'll be looking for a disc that has the name of the computer manufacturer you bought it from, along with a little bit of information regarding an operating system or OS. If the second case is true, and you've never used that disc before, it'll probably be packages in plastic wrap or a sealed case of some sort, but usually not solid plastic or anything like that. Finally, if you bought a display model from a store, you probably never had the disc to begin with. Also, you might not actually have a disc, but might instead have a recovery partition. If that is the case, your computer's manual should mention that.