Enhanced Write Filter (EWF) Overview (Standard 8)
7/8/2014
Review Enhanced Write Filter (EWF) technical documentation for Windows Embedded 8 Standard (Standard 8).
Enhanced Write Filter (EWF) lets you write-protect a run-time image. By redirecting all write requests to RAM, EWF enables the run-time image to maintain the appearance of a writable run-time image.
Important
The functionality of EWF in Windows Embedded 8 Standard (Standard 8) is mostly the same as in Windows Embedded Standard 7 and is included for backward compatibility. However, EWF does not support Hibernate Once/Resume Many (HORM) or disk mode in Standard 8.
You can add EWF to your image by adding the Enhanced Write Filter module to your design in Image Configuration Editor (ICE) or Image Builder Wizard (IBW).
In This Section
- EWF Concepts
Describes the EWF architecture and volume configuration.
- EWF Modes
Describes differences between the two EWF modes.
- EWF Installation and Configuration
Describes how to install EWF and configure it for each of the two modes.
- EWF Performance Considerations
Describes ways that you can improve the performance of EWF.
- EWF Integration
Specifies EWF interactions with other Standard 8 features and components.
- Troubleshooting EWF
Provides tips for troubleshooting common EWF configuration problems.