Sony PCG-XG28 Primary User Manual page 51

To remove the DVD-ROM drive from the multipurpose drive bay using
the Jog Dial control
Rotate the Jog Dial control to PowerPanel, and then press the Jog Dial
control. The PowerPanel window appears.
Rotate the Jog Dial control to Multipurpose drive bay, and then press
the Jog Dial control.
You do not need to shut down the computer to insert the DVD-ROM
drive into the multipurpose drive bay. You can also insert the DVD-ROM
drive while the computer is in power saving mode.