Sony PCG-XG28 Primary User Manual page 56

Click the Remove multipurpose drive bay device icon on the
PowerPanel. The Device Swapping message appears.
Slide the Release lever on the bottom of the unit in the direction of the
arrow and hold while sliding the device out of the multipurpose
drive bay.
Click OK.
Double-click in the system task tray.
The "Unplug or Eject" dialog box appears.
In the Unplug or Eject Hardware dialog box, select the appropriate
device, and then click Stop.
Confirm the device and click OK.
A message appears informing you that the device can now be safely
removed from the system.
Slide the RELEASE lever on the bottom of the computer in the
direction of the arrow and then unplug the drive from the computer.