Administrator Guide
CAUTION: Please follow proper write lter and Windows Page File usage instructions at all times. Such instructions include
making sure that the write lter is enabled during regular use and is disabled only temporarily by an administrator when required
for image upgrades, applying security patches, registry changes and application installation. The write lter should be re-enabled
as soon as such tasks are completed. Such instructions further include never enabling the Windows Page File feature during
regular use of the thin client. Any operation of a Dell Wyse Windows Embedded Thin Client with the write lter turned o during
regular use and/or with the Windows Page le enabled will prematurely wear out your Flash/SSD storage, decrease performance
and decrease the lifespan of the product. Dell is not responsible for, and will not, warrant, support, repair or replace any thin
client device or component that fails to operate properly due to a failure to follow these instructions.
Using Unied Write Filter
To congure thin client devices using UWF, do the following:
1 Log in as an administrator.
If automatic login to a user desktop is enabled, log o from the user desktop and log in as an administrator.
2 To disable the Unied Write Filter, double-click the Dell Wyse WF Disable icon on the desktop.
This icon disables the lter and reboots the system.
3 Congure the thin client device as per your requirements.
4 After you congure the thin client device, to enable the Unied Write Filter, double-click the Dell Wyse WF Enable icon on the
desktop.
This icon enables the lter and reboots the system. Your congurations on the thin client device are now saved, and they persist after
you reboot the thin client.
After system start-up, the Unied Write Filter (UWF) utility starts automatically.
You can add specic les or folders on a protected volume to a le exclusion list to exclude those les and folders from being ltered by
UWF. When a le or folder is in the exclusion list for a volume, all writes to that le or folder bypass UWF ltering, and are written directly to
the protected volume and persist after the device restarts.
You must log in as an administrator to add or remove le or folder exclusions during run time, and you must restart the device for new
exclusions to take eect.
Running Unied Write Filter command–line options
There are several command lines you can use to control the Unied Write Filter. Command–line arguments cannot be combined.
Use the following guidelines for the command–line option for the Unied Write Filter. You can also use the commands if you open the
command prompt window with elevated privilege by entering command in the Run box.
Table 2. Running
Unied Write Filter command–line options
Command-line options Description
uwfmgr This command-line tool congures and retrieves settings for Unied
Write Filter (UWF). If there are no command-line options available,
it displays the command help.
uwfmgr lter enable This command-line enables the Unied Write Filter after the next
system restart. The Unied Write Filter status icon is green when
the Unied Write Filter is enabled.
uwfmgr lter disable
This command-line option disables the Unied Write Filter after the
next system restart. The Unied Write Filter status icon remains red
while disabled.
Additional administrator utility and settings information 29