The SONAR 8 Content and Dimension Pro Discs require a DVD drive that is capable of reading Dual Layer DVD's. This is a result of the total size of content on each of these discs.
If you are unsure about whether your DVD drive is capable of reading Dual Layer DVD's the best resource would be your DVD drive or computers manufacturer.
Additionally there are a number of third-party software tools available that can help you identify the capabilities of your computer's hardware. Cakewalk does not endorse any of these companies or products, but offer them as alternatives to contacting the manufacturer of your DVD drive or computer. Detailed information on using both of the applications as well downloads for demo or trial versions can be found in the links below.