Welcome to the CloneDVD Forum.
Suggest reviewing the CloneDVD User Manual, which is easily viewed by clicking on the â€œHelpâ€ icon located in the top right hand corner of CloneDVD. When viewing the CloneDVD User Manual note the information under the heading title â€œTarget Sizeâ€. In selecting â€œTarget Sizeâ€ if you are using single layer blank DVD Media (4.7 GB) select DVD-5. If you are using DL blank DVD Media (8.5 GB) select DVD+/- R DL.
Also suggest reviewing the AnyDVD/CloneDVD User Tutorial ->