My friend wants to reinstall XP Pro on his older Dell Latitude C640 laptop. The laptop has Win2000 COA stickered to the bottom. We read the existing XP Pro Product ID and Key using Magic Jellybean and it appears to be retail key (no OEM in ID string). However I don't know if it is full retail or upgrade version key.
I have an XP Pro retail installer. My question is: If we attempt to install, will accepting key upfront mean that we have the correct version (full retail)? If it rejects key, will it tell us that it is instead an Upgrade version key (as Windows 7 will do). If we obtain an XP Pro upgrade installer, will inputting the Product key from the COA sticker, and then the XP Upgrade Product key be all that is needed - or do we need an original Win2000 CD?
My memories of these XP upgrade procedures are really hazy so if anyone can recall it would be great to know what to expect. Any tips also greatly appreciated!