The differences between the two modes are subtle. Full Disc copies all disc video content; will compress it if necessary to make it fit on the output media you choose; writes first to a temp file as VOBs, then burns those to disc, writes them to a folder or creates an image of them if you have chosen an ISO output. The only option is to strip DTS audio tracks, which can save space. Clone makes a bit-for-bit copy of the original disc; writes first to a temp file as an ISO; applies NO compression; preserves the original layer break regardless of Common Settings; writes the temp file out to HDD or burner. If you want an ISO HD file and a burned disc, UNcheck "Delete Temporary Files When Done" in Common Settings in Clone mode. The only option is a box to prevent including any non-video content in the output (e.g. DVD-ROM stuff). I'm not sure I completely understood your question, but those are the differences.