CloneCD backing up a dvd

Ok, I have 1 dvd that I backed up with another program, went to watch it and it won’t read after a while. So I used CloneCD to make another backup and eventually, it read an image and it played fine after it was burned. Problem is, and it’s more of an annoyance is that the image it created is split into 5 parts, on another PC I have access to I have done the exact same thing and it only uses 1 file, a .dvd image.

So, why is it different on my PC? I have XP Pro, Primary HDD is 120GB IDE and I also have a 200GB SATA for storage.