Virtual CD Manager...
A small portion of drive space on your new My Passport or My Book hard drive has been used to create a Virtual CD (VCD). The VCD contains the WD SmartWare installation software, the encryption and password protection application, User Manuals, and other resource files. The VCD looks like an actual CD volume and appears on the screen each time you connect your WD drive to the computer.
The VCD is necessary if you wish to install WD SmartWare or if you want to use the encryption and password protection features on the drive.
If you don't wish to run WD SmartWare or use the security features, you can disable the VCD following the steps below. The VCD can be re-enabled by running the VCD manager.