I turn X-Plane under Linux Mint 18.3. I downloaded the installer and placed it on the desktop. Starting from DVD-1 works badly because Linux has trouble changing DVDs and then proceding with the installation. Alternatively, you can also copy the complete X-Plane folder and subfolders from Windows into the personal folder within Linux. The beauty of X-plane is that it runs on both Windows and Linux and Mac. Inside X-plane does not run any special software to prevent a 2nd copy from running.