EWF (Enhanced Write Filter)

The Ehanced Write Filter is a component of the embedded versions of Microsft Windows OS. Where all or selected volume changes are written to ram instead of the HDD. This has two immediate benefits with the first being increased HDD lifetime. As writes to the HDD are kept to a minimum or possibly none the HDD has less chance of failing and more likely to last longer. With the second benefit being increased security as if the system does get infected with a virus or any other malware. The solution is simply to restart the system and the problem is gone.