Administrator Guide

The File Based Write Filter can also be enabled/disabled through the command line or through the File Based Write Filter Enable/Disable
desktop icons. The status (enabled/disabled) of the File Based Write Filter is displayed by the File Based Write Filter status icon in the
system tray green indicates that the File Based Write Filter is enabled and red indicates that the File Based Write Filter is disabled.
NOTE:
• Contents of the File Based Write Filter cache should never be ushed if it is eighty-percent or more full. The Administrator should
periodically check the status of the cache and restart the thin client if the cache is more than eighty percent full. Note that
alternatively an administrator can congure the client to reboot if the FBWF cache is 90 percent or more full. By default the client is
congured to reboot if the FBWF cache usage exceeds 90 percent.
• A Terminal Services Client Access License (TSCAL) is always preserved regardless of File Based Write Filter state (enabled or
disabled). If you want to have other registry settings preserved regardless of File Based Write Filter state, contact support for help
as described in Technical Support.
WARNING: It is highly recommended that Windows write lter is kept enabled during normal use of thin clients. It should be
disabled only by administrators while making necessary changes. Extended use with write lters turned o can reduce the life of
your ash drive. It is a good practice to have write lters enabled to ensure device security.
This section provides the following information on using the File Based Write Filter:
• Running File Based Write Filter Command Line Options
• Enabling and Disabling the File Based Writer Filter Using the Desktop Icons
• Setting the File Based Write Filter Controls
Running File Based Write Filter Command–Line Options
There are several command lines you can use to control the File Based Write Filter. Command–line arguments cannot be combined.
Use the following guidelines for the command–line option for the File Based Write Filter. You can also use the commands if you open
Command Prompt window by entering command in the Run box:
• fbwfmgr
With no arguments — Displays the File Based Write Filter conguration for the current session and the next.
• fbwfmgr /enable
Enables the File Based Write Filter after the next system restart. The File Based Write Filter status icon is green when the File Based
Write Filter is enabled.
• fbwfmgr /disable
Disables the File Based Write Filter after the next system restart. The File Based Write Filter status icon remains red while disabled.
• fbwfmgr /commit C: <le_path>
Commits the changes made to the le to the underlying media. Note that there is a single space between volume name and le_path.
The le path must be an absolute path starting with \.
For example, to commit a le C:\Program Files\temp.txt the command would be fbwfmgr /commit C: \Program Files\temp.txt.
• fbwfmgr /restore C: <le_path>
Discards the changes made to the le, that is, it restores the le to its original contents from the underlying media. The le path must
be an absolute path starting with \. If the le was deleted, it will be recovered.
• fbwfmgr /addexclusion C: <le_or_dir_path>
Adds the le or the directory to the exclusion list of the volume. That is, the le or directory is removed from the protection of the File
Based Write Filter. The exclusion will take eect after the next system reboot. The le or directory path must be an absolute path
starting with \.
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Additional Administrator Utility and Settings Information