The Windows Embedded Standard 2009 May 2011 Feature Update adds two additional applications “Enahnced Write Filter Management Tool” and “File Based Write Filter Management Tool” which allow you to monitor the status and configure the filter drivers in you images. The applications will start on the system start and appear in the systray also showing notifications when the overlays runs full. However the tools can be configured to deactivate the automatic startup too.
The new features can be downloaded from the Microsoft ECE:
Window Embedded Standard 2009 May 2011 Feature Update
The two tools have a dependency on the Write Filter WMI Providers which were released in February 2011.