Switching /programs drive?

I have a 1TB drive that i used for all of my games and some programs. I now installed a faster 3TB drive that i want to use for a game drive but have no idea how i would go about swapping the data and having windows know the directories were switched?
Im keeping both drives in my computer  (the 1TB will be used for something else),


You have to reinstall all of your programs to the 3TB drive.  The reason is because of the registry.  You could theoretically coopy everything over, but I don't think that you will want to retype all of those reg keys.

I was hoping It wouldnt lead to that. downloading all my steam games is going to be a bitch lol. I guess this is my chance to re-install windows while im at it.