*No valid DVD volume could be located

It might work, there's only one way to find out unfortunately. From my experiences though, when my movies wouldn't play in Windvd, they wouldn't play on my standalone. But, everybody's standalone is different I suppose. Also, I don't know if it is the same in Powerdvd, but in Windvd you have to load the movie from a folder, and the folder must be named VIDEO_TS or windvd won't play the movie either.

I would rely more on Powerdvd than ifoedit. If it works in Powerdvd you're probably safe. Seems like a lot of people (including myself) have had problems with the dvd play in ifoedit.

Thanks both to Josh and Steelo, I think I've solved my problem. Steelo, you're right!I tried to click on DVD play with or without a DVD inserted in my drive and the message pops up only when the drive is empty! I never paid attention to that because I didn't think IFOEdit could be related to DVDs inserted in the drive. Now I think my backup will work on a standalone (at least I hope!) Thanx :D

Oh yes... that makes so much more sense! Good one Steelo. I think the option you want to choose for watching the movie or certain vobs on your hard drive is Preview... but I would always rely on powerdvd and windvd for testing your movies, and trying a rw like Steelo said if you're unsure if it will work or not.