Connect hdd to your PC and to the main power supply and start DMM. The database will be recreated automatically.
Transfer a couple of songs into your hdd to confirm if the hdd has fully recovered all the files.
Click the Eject Hardware icon on the Windows task bar and select the STOP USB Mass Storage Device from the pop up menu. Follow the screen instructions to unplug your hdd. If you see a “Try stopping the device again later” message on your PC screen, try closing DMM, or other applications which are running on your PC and then click the eject hardware icon again.
Disconnect the Jukebox from your PC and press POWER to switch on the player again.