Sony VGN-SZ320P - VAIO SZ Series User Manual page 196

What should I do if I cannot write data to CD media?
Do not launch any software application or allow any to launch automatically, not even a screen saver.
Do not use the keyboard.
Do not use a CD-R/RW disc that has an adhesive label affixed to it. This could cause a write error or other damage.
What should I do if I cannot write data to DVD media?
This Q & A entry applies to selected models only. See the online Specifications to find the type of your optical disc drive,
and then Reading and Writing Optical Discs
Make sure you are using the correct DVD recordable media.
Check which DVD recordable format is compatible with your computer's built-in DVD recorder. Note the possibility that
some brands of DVD recordable media do not work.
(page 34) to find about the supported disc media.
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Troubleshooting