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Quick Reference Guide
27
Enhanced Write Filter Manager command line control
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CAUTION: Terminal Administrators should use Microsoft Windows NT 
file security to prevent undesired usage of these commands.
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CAUTION: When using the 
-commit
 command, all the temporary 
contents are permanently written to the flash memory.
Because the Enhanced Write Filter Manager commands are executed 
on the next boot, you must reboot the system for the command to take 
effect.
Windows XPe includes the Enhanced Write Filter (EWF) console 
application command line tool, Ewfmgr.exe, which you can use to 
issue a set of commands to the EWF driver, report the status of each 
protected volume overlay, and report the format of the overall EWF 
configurations.
By including the EWF Manager console application component in 
your configuration and building it into your image, you enable use of 
Ewfmgr.exe and the corresponding commands.
To use the Enhanced Write Filter Manager using the command line, 
select Start > Run > Open and access the system DOS prompt by 
typing 
CMD
 in the Open field and clicking OK.
At the system prompt, enter 
ewfmgr c:
 and press 
Enter.
 Using the 
ewfmgr <drive-letter> -[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 
-commit
 
with the 
-disable
 command to commit and then disable.