I have two Windows XP installation DVDs (that came from the OEM with my two laptops). I need to reinstall Windows on one of them but I'm not sure which one is which. Is there any way to tell which DVD was used for each laptop?
PS. They both came from the same OEM and there're no distinguishing markings on the DVDs themselves.
PS2. The reason for my concern is to avoid installation twice, which may invalidate license for already installed Windows XP on one laptop if I duplicate it to another.