I'm wanting to buy Windows 7 Ultimate but in case the DVD gets scratched I want to immediately make a backup. What I want to be sure of is that I don't lose anything in the backup. If, when I get the DVD, I do the following in ImgBurn:
- Create image file from disc
- Write that image file to new DVD disc from ImgBurn
... will it create me a truly identical copy of the install DVD? I'm planning to actually install from the newly-burnt DVD to make 100% sure it is not missing anything. Will I lose some kind of copy-protection information in the copy process that would make the backup not work?
Also, how large a backup DVD will I need to write to?