When it works
When it works, it works brilliantly, but it doesn't always work. It's not just UHDs, though I have yet to successfully copy one, and their EXTREMELY limited number of drives that UHD Copier works with (which does not include the Verbatim 43888 I use with MakeMKV!) sort of makes me wonder if their product works at ALL on UHDs. It also has a spotty record when it comes to Blu-Ray Copier, and it lies to you by saying "Your disc is dirty or scratched, clean it and try again!"—which NEVER works, BTW! Why can't they just say, "We can't open this, we're a failure!"...which they are when it comes to those discs. Unless you really want a 1:1 disc copy of UHDs and ALL Blu-Rays? Try MakeMKV instead.