Sony PCV-RZ50C VAIO User Guide (primary manual) User Manual page 131

Incompatible DVD media
For copying your recorded TV programs, do not use the following types of DVD media:

DVD-R for Authoring

DVD-RAM

DVD-ROM
Media compatibility with different equipment varies between manufacturers. If you experience difficulty with recording
data or playing a disc, try a different disc or a different brand of media.
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