The Windows-10 App is called "Recovery Drive". Leave "include system files" checked. You might have to use a 32gb flash-drive. If ever used (and it works) machine should look very "Dell Factory Shipped" when done. Yes, also create one from microsoft.com (Media Creation Tool) as well. It won't have Dell OEM custom stuff ... just perfectly genuine 64bit Windows-10 .  [URL]
Have several Win10 PCs I'm configuring for family. In the Win7 days I would download the recovery media and burn to DVD in case it was ever needed. What's the preferred method for having recovery media for Win10?
Preferred Windows recovery option