Sector to sector DVD copy like CloneCD?

[Atlantis]

I have two questions. First why Nero’s burn image (or DVD Copy or CD Copy) does not have a verify option? I think it’s very important because sometimes when I write a DVD-Video I get burn process completed successfully but at the verify stage I get an error so I know that my burn is bad. Why the burn image has no verify option?

Is there a program like CloneCD for DVD? I’m not talking about CloneDVD. I mean a program that copies sector to sector from DVD to DVD. Is Nero’s DVD copy sector to sector? I know that its CD copy is not and I use CloneCD in that case.

[Doom9]

I don't know where Ahead put the verify option.. in fact I've been wondering why it's not there for certain burning operations myself.

As to your 2nd question, such a tool is impossible. Have you ever had a look at the recordable side of a DVD-R disc? Even before burning you'll see a small ring close to the center.. that's where the CSS data resides on a commercial disc, and on a DVD-R that part is already filled with zeroes to prevent you from making a 1:1 copy. On DVD+R there's no such ring but the firmware prevents a 1:1 copy. Anyway, why would you want a 1:1 copy? Because you want to put the original into one drive, and a blank in your burner and press go? In that case, there are solutions for you: AnyDVD (www.slysoft.com) or DVD Region Free (http://www.dvdidle.com/dvd-region-free.htm) which decrypt DVDs on the fly so an on-the-fly copy is possible. But those tools remove stuff you don't need like region codes, Macrovision protection and of course CSS encryption and everything you'd likely want to throw out when making a copy anyway. There's a free alternative called DVDSynth, but the author abandoned the project and I don't think it's nearly as good as the two other programs I mentioned (I can't actually speak for DVD Region Free but I have AnyDVD and it works as advertised so far except for one disc set). The other free alternative is rip first, burn later. Not quite as fast, but safer (on the fly copying is hardware demanding), and it's doable with completely free tools.