I have two drives of 64-bit SP1 W7 Pro and I used one of them to install on a system. It has not been installed, but I can't remember which.

I built a new system and I have both MS Windows 7 64 bit SP1 OEM drives.

I used one of the disks for installation of W7 some time ago.
I not only remember the one I used.
I want to not use the one I previously used.
Is there a way I can say that I have used without guessing?
I don't know, but I read that if I use the one I have already used it will be 'unlicense"(which is not the right term) the system I had already installed and I don't want that to happen.
Can anyone help?

The disc is irrelevant, what matters is the product key that you used.

Compare key - license in use

Click Start, type: cmd

Right-click on CMD

Click on run as administrator

At the command prompt, type the following command:

slmgr - dli

 

 

Press enter on your keyboard

This will reveal the key to partial product that give a clue. Compare it with the keys that you have and it will confirm which copy is in use.

Tags: Windows

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