The only problem is that I can't find the ISO afterwards. I watched the whole process; it was building the necessary files in the isofolder, then it disappeared when it was done. I searched the PC and it didn't find any ISO file. I feel the instructions aren't clear enough to indicate that. For now I downloaded what I needed from the Insider website. It would be nice to know for next time what esdtoiso does with with the file. Thanks.