There exists out-of-band data on some discs which is used for e.g. copy protection. ISO files are just a copy of the on-disc data stream, and don't encode that information.
There are other reasons, but that is the main market such software targets, to my knowledge. - Rich On Sun, Apr 1, 2012 at 12:57 PM, Roger Sears <[email protected]> wrote: > Seeing the recent post about making and then using an iso. image to create > an exact copy of a CD or DVD, and having screwed up that process when I > tried it using ImgBurn, I've got to ask, why doesn't just making a > disc-to-disc copy accomplish the same thing? > > I finally resorted to the D-T-D copy after I (must of) screwed up the .iso > burn step - all I got on the new DVD was a copy of the .iso file I had > initially created. > _______________________________________________ > Thinkpad mailing list > [email protected] > http://stderr.org/cgi-bin/mailman/listinfo/thinkpad _______________________________________________ Thinkpad mailing list [email protected] http://stderr.org/cgi-bin/mailman/listinfo/thinkpad
