When you enter the ewfmgr [boot command] syntax, use the following commands in the boot command variable of the command line:

●-all

Displays information about all protected volumes and performs a command, such as disable, enable, and commit, on each volume, if specified.

●-commit

Commits all current level data in the overlay to the protected volume, and resets the current overlay value to 1. You can combine -commitwith the -disablecommand to commit and then disable.

●-disable

Disables the overlay on the specified protected volume.

●-enable

Enables the EWF so that data written to the protected media is cached in the overlays. The current overlay level becomes 1 as soon as EWF is started, and a new overlay is created at level 1.

●-commitanddisable

Commits data in the overlay upon shutdown and disables EWF after the system reboots.

Using the Enhanced Write Filter configuration interface

In addition to the DOS command-line tool, Windows Embedded includes an EWF configuration interface. You can access the EWF interface through the Windows Control Panel.

To access the EWF interface, follow these steps:

1.Log on as an administrator.

2.Select Start > Control Panel > Other Control Panel Options.

3.Select HP WriteFilter Configuration.

4.Use the EWF Main tab to select Write Filter options.

The EWF interface includes the following buttons:

●Enable/Disable EWF

Enables the Enhanced Write Filter so that data written to the protected media is cached in the overlays. Disables the overlay on the specified protected volume.

●Overlay Configuration

Displays the overlay information and is a combination of the information supplied when executing ewfmgr.exe c: -Descriptionand ewfmgr.exe c: -Gaugefrom the DOS prompt.

●Clear Boot Command

Clears the boot command from the DOS prompt.

●Commit Data to Volume

Enhanced Write Filter 15