●/displayconfig

Displays all current configuration information for the write filter including filter state, protected volumes list, cache compression state, overlay cache threshold, cache pre-allocation status, and write through paths.

●/overlaydetail

Displays detail on the current overlay contents for all protected volumes including file and folder contents and memory used.

●/addexclusion

Adds a write through path to the exclusion list.

●/removeexclusion

Removes a write through path from the exclusion list.

●/setthreshold

Sets the overlay threshold value.

Using the File-Based Write Filter configuration interface

In addition to the DOS command-line tool, Windows Embedded includes a FBWF configuration interface. You can access the FBWF interface by using the Windows Control Panel.

To access the FBWF interface, follow these steps:

1.Log on as an administrator.

2.Select Start > Control Panel.3.Select HP Write Filter Configuration.

The FBWF interface includes the following buttons:

●Enable/Disable Write Filter

Enable/disable the FBWF so that data written to the protected media is cached or not.

●Enable/Disable Cache Compression Enable/disable cache compression.●Enable/Disable Cache Pre-allocation Enable/disable cache pre-allocation.●Set Cache Threshold

Set the amount of RAM in MB that the FBWF cache can use.

Using the File-Based Write Filter status utility

The FBWF status utility creates an icon in the notification area of the taskbar that shows the status of the FBWF. You can right-click the icon to display and execute the available options.

4 Chapter 2 HP Write Filters