This site is being deprecated.
Please see the official X‑Plane Support page for help.
I am not with Laminar Research; just a flight simmer.
Provided X-Plane is on the desktop or in a standalone directory on your "c" drive ie not mixed within other directories ( isolated from other programs) all you need to do is copy the complete directory to the new location (another drive?) and paste.
If you have a desktop icon as a shortcut to start X-Plane you will have to change the properties of the icon to reflect the location of the startup file.
This site is no longer being actively maintained.