The attached ZIP file contains a management pack for monitoring mount point labels. In order for SCOM to discover and monitor mount points, the mount point must have a label, but the MS MP does not alert if no label is found, it simply does not discover the mount point. This managament pack will alert when a computer contains one or more mount points that are not labelled, and the alert description will provide details of the specific mount points without labels.
By default, the mount point monitor label is disabled in the management, therefore overrides will need to be used to enable it. The monitor is called "Mount Point Labels" and is targeted at the Windows Server Operating System class.
More details about this management pack are available here, http://aquilaweb.net/2015/05/05/scom-monitoring-for-mount-point-labels/.