It’s all pretty self explanatory at this point.
If you want to upgrade an existing installation of Windows then you can select to do so, but alternatively if you are interested in getting ISO file for use with clean installations then you need to select the second option. You will then have two options on how to proceed. Make sure you select Accept to agree to those terms in order to progress. Step 3: You’re now going to see all the usual plethora of license agreements that accompany such software.