Windows Embedded Standard 7 for HP Thin Clients - Administrator Guide

Configuring the write filters to allow permanent changes
CAUTION: Ensure that the write filter is enabled after committing necessary configurations to the
thin client flash drive. During normal operation of the thin client, the write filter must be enabled. Also
ensure that Page File is not enabled on thin clients with flash memory storage. Failure to follow these
required actions can void the warranty of the flash storage device. In the event of damage to the flash
storage device due to operation with a disabled write filter or enabled Page File, the damage will not
be covered by HP warranty.
The following table describes the different methods for configuring the write filters to allow you to
make permanent changes to the system.
CAUTION: HP strongly recommends using method 1. Using methods 2 or 3 can result in unwanted
changes being committed to system and increased wear on the flash drive.
Method 1 Method 2 Method 3 (FBWF only)
1. Disable the write filter.
2. Restart the thin client.
3. Make the necessary
configurations.
4. Enable the write filter.
5. Restart the thin client.
1. Make the necessary
configurations.
2. EWF: Commit the volume overlay
and restart the thin client.
FBWF: Commit individual cached
files. The action takes effect
immediately.
▲
Use the HP Write Filter
Configuration utility or the
command line to add files or
folders to the exclusion list, and
then restart the thin client.
See the following sections for more information about performing these various tasks:
●
Disabling and enabling the write filters on page 6
●
Committing cached write data on page 7
●
Adding files and folders to the exclusion list (FBWF only) on page 7
Disabling and enabling the write filters
The following table describes the different methods for disabling and enabling the write filters.
Method 1 Method 2 Method 3
1. Right-click the write filter status
icon in the notification area and
select the desired state.
2. Restart the thin client.
1. Open the HP Write Filter
Configuration utility.
2. On the General tab, either select
the write filter you want to enable
or choose to disable both.
3. Restart the thin client.
1. Use the command line to set the
desired state.
2. Restart the thin client.
TIP: Method 1 is the quickest way to disable or enable the write filters, but only methods 2 and 3 will allow you to switch
from one write filter to the other on a single thin client restart.
6 Chapter 2 Write filters