It's pretty standard. The first screen asks you to agree to some crap about software, which is standard for all Garmins. It will disappear within 10–15 seconds while the boot progresses, even if you don't click in agreement. The second is only for truck GPS when the unit asks you to confirm the truck profile (dimensions). It needs to know your truck dimensions to give you a truck route. It will never ask you for dimensions if you have a car profile on the same GPS. I don't know specifically about the Dezl 800; it's a newer and fancier GPS, but I have the Dezl 560 and the Dezl 760, and they act the same.