Touch-it XELO
Operating Instructions
Copyright / © Christ-Elektronik GmbH
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Sep. 2015, Revision 12
a member of the Christ Company Group
Document No.: E461201
3.6
Enhanced Write Filter EWF
Windows XP, Windows 7 or Windows 8 embedded operating systems are delivered by default
with EWF protection from Christ-Elektronik. This so called Enhanced Write Filter prevents write
accesses to a protected drive (SSD/HDD) and therefore unintentional system changes (blue
screens, viruses, user errors, etc.).
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The “C” system partition is EWF protected by default
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The “D” data partition is not EWF protected by default
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Advantage: clean, fast system without viruses and blue screens
3.6.1
Enable or Disable the EWF Filter
On the desktop of your Touch-it Panel PC you will find three icons for the Enhanced Write Filter
control.
“C Filter Status”:
View information about the EWF drive
Delivery state: Enabled
“C Filter On“:
Write protection for partition C:
Turn on, effective only after restarting the touch panel
“C Filter Off”:
Write protection for partition C:
Turn off, changes are immediately accepted
