Sony PCG-XG18 Primary User Manual page 45

Your computer comes with a DVD-ROM drive. You can play both DVDs
and CDs.
Turn on the computer.
Press the Eject button to open the DVD-ROM drive.
The tray slides out.
Place a DVD or CD in the tray with the label side facing up. For
DVDs, which can be played on both sides, the side of the disc facing
up is the side that plays. Push the disc onto the hub until the disc
clicks into place.