What is the best way to write DVD-9 test copies?
Follow these steps: • Choose your layer-break point from the cells available • Create DLTs or DDP image files on DVD-ROM (UDF) • Read the DLT’s back as an image file. (Making the test disc from the DLTs ensures your customers are seeing the best representation of what will be on the pressed discs.) • Using the latest Toast (it must be 6.1 or higher) mount the image file and burn the test disc. This method will often result in a disc where the layer-break matches the final pressed disc. However, please see John Brisbin’s comments: ‘This method generally works because of elements of necessity and elements of luck. First, none of the readily understood disc image formats on Mac OS contain explicit information about the layer break on a DVD, if any. Therefore, Toast evaluates the disc to determine an appropriate layer break point. If necessary, it will insert a non-seamless cell to make an appropriate layer break. With a DVDAfterEdit image, however, this is never necessary since a dual lay
