You would do the following:
1. Backup the Data/Catalogs folders on the media server;
2. In the event of a server crash, reinstall Backup Exec.
3. Restore the Data/Catalogs folders to a temporary folder.
4. Stop the BE services, rename the newly installed Data/Catalogs folders to something like Data_OLD.
5. Copy the restored Data/Catalogs folders to the installed drive and start up the services.
This should show you your B2D.
You can consider backing up the Data/Catalogs folders to a B2D, or copying them to a folder on the backup storage.