I appreciate all your help man. Are we on the same page here? I already have a D: drive that’s only 250GB and I am updating to a 1TB. The files were already setup on the 250GB D: drive. If you look at the photo you will see that everything after the Microsoft.FlightSimulator folder all folders are a shortcut to the 250GB D: drive.
So for instance in the link you gave me to follow step 3 would be in error because I would be editing the drive that will be replaced. Does that make sense?