Edit C:\Windows\PolicyDefinitions\DiskQuota.admx

<?xml version="1.0" encoding="utf-8"?>

<policyDefinitions xmlns:xsd="http://www.w3.org/2001/XMLSchema" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" revision="1.0" schemaVersion="1.0" xmlns="http://schemas.microsoft.com/GroupPolicy/2006/07/PolicyDefinitions">
  <policyNamespaces>
    <target prefix="diskquota" namespace="Microsoft.Policies.DiskQuota" />
    <using prefix="windows" namespace="Microsoft.Policies.Windows" />
  </policyNamespaces>
  <resources minRequiredRevision="1.0" />
  <categories>
    <category name="DiskQuota" displayName="$(string.DiskQuota)">
      <parentCategory ref="windows:System" />
    </category>
  </categories>
  <policies>
    <policy name="DQ_Enable" clientExtension="{3610eda5-77ef-11d2-8dc5-00c04fa31a66}" class="Machine" displayName="$(string.DQ_Enable)" explainText="$(string.DQ_Enable_Help)" key="Software\Policies\Microsoft\Windows NT\DiskQuota" valueName="Enable">
      <parentCategory ref="DiskQuota" />
      <supportedOn ref="windows:SUPPORTED_Win2k" />
      <enabledValue>
        <decimal value="1" />
      </enabledValue>
      <disabledValue>
        <decimal value="0" />
      </disabledValue>
    </policy>
    <policy name="DQ_Enforce" clientExtension="{3610eda5-77ef-11d2-8dc5-00c04fa31a66}" class="Machine" displayName="$(string.DQ_Enforce)" explainText="$(string.DQ_Enforce_Help)" key="Software\Policies\Microsoft\Windows NT\DiskQuota" valueName="Enforce">
      <parentCategory ref="DiskQuota" />
      <supportedOn ref="windows:SUPPORTED_Win2k" />
      <enabledValue>
        <decimal value="1" />
      </enabledValue>
      <disabledValue>
        <decimal value="0" />
      </disabledValue>
    </policy>
    <policy name="DQ_Limit" class="Machine" displayName="$(string.DQ_Limit)" explainText="$(string.DQ_Limit_Help)" presentation="$(presentation.DQ_Limit)" key="Software\Policies\Microsoft\Windows NT\DiskQuota">
      <parentCategory ref="DiskQuota" />
      <supportedOn ref="windows:SUPPORTED_Win2k" />
      <elements>
        <decimal id="DQ_LimitValue" clientExtension="{3610eda5-77ef-11d2-8dc5-00c04fa31a66}" valueName="Limit" required="true" maxValue="1000" />
        <enum id="DQ_LimitUnits" clientExtension="{3610eda5-77ef-11d2-8dc5-00c04fa31a66}" valueName="LimitUnits" required="true">
          <item displayName="$(string.DQ_UnitsKB)">
            <value>
              <decimal value="1" />
            </value>
          </item>
          <item displayName="$(string.DQ_UnitsMB)">
            <value>
              <decimal value="2" />
            </value>
          </item>
          <item displayName="$(string.DQ_UnitsGB)">
            <value>
              <decimal value="3" />
            </value>
          </item>
          <item displayName="$(string.DQ_UnitsTB)">
            <value>
              <decimal value="4" />
            </value>
          </item>
          <item displayName="$(string.DQ_UnitsPB)">
            <value>
              <decimal value="5" />
            </value>
          </item>
          <item displayName="$(string.DQ_UnitsEB)">
            <value>
              <decimal value="6" />
            </value>
          </item>
        </enum>
        <decimal id="DQ_ThresholdValue" clientExtension="{3610eda5-77ef-11d2-8dc5-00c04fa31a66}" valueName="Threshold" required="true" maxValue="1000" />
        <enum id="DQ_ThresholdUnits" clientExtension="{3610eda5-77ef-11d2-8dc5-00c04fa31a66}" valueName="ThresholdUnits" required="true">
          <item displayName="$(string.DQ_UnitsKB)">
            <value>
              <decimal value="1" />
            </value>
          </item>
          <item displayName="$(string.DQ_UnitsMB)">
            <value>
              <decimal value="2" />
            </value>
          </item>
          <item displayName="$(string.DQ_UnitsGB)">
            <value>
              <decimal value="3" />
            </value>
          </item>
          <item displayName="$(string.DQ_UnitsTB)">
            <value>
              <decimal value="4" />
            </value>
          </item>
          <item displayName="$(string.DQ_UnitsPB)">
            <value>
              <decimal value="5" />
            </value>
          </item>
          <item displayName="$(string.DQ_UnitsEB)">
            <value>
              <decimal value="6" />
            </value>
          </item>
        </enum>
      </elements>
    </policy>
    <policy name="DQ_LogEventOverLimit" clientExtension="{3610eda5-77ef-11d2-8dc5-00c04fa31a66}" class="Machine" displayName="$(string.DQ_LogEventOverLimit)" explainText="$(string.DQ_LogEventOverLimit_Help)" key="Software\Policies\Microsoft\Windows NT\DiskQuota" valueName="LogEventOverLimit">
      <parentCategory ref="DiskQuota" />
      <supportedOn ref="windows:SUPPORTED_Win2k" />
      <enabledValue>
        <decimal value="1" />
      </enabledValue>
      <disabledValue>
        <decimal value="0" />
      </disabledValue>
    </policy>
    <policy name="DQ_LogEventOverThreshold" clientExtension="{3610eda5-77ef-11d2-8dc5-00c04fa31a66}" class="Machine" displayName="$(string.DQ_LogEventOverThreshold)" explainText="$(string.DQ_LogEventOverThreshold_Help)" key="Software\Policies\Microsoft\Windows NT\DiskQuota" valueName="LogEventOverThreshold">
      <parentCategory ref="DiskQuota" />
      <supportedOn ref="windows:SUPPORTED_Win2k" />
      <enabledValue>
        <decimal value="1" />
      </enabledValue>
      <disabledValue>
        <decimal value="0" />
      </disabledValue>
    </policy>
    <policy name="DQ_RemovableMedia" clientExtension="{3610eda5-77ef-11d2-8dc5-00c04fa31a66}" class="Machine" displayName="$(string.DQ_RemovableMedia)" explainText="$(string.DQ_RemovableMedia_Help)" key="Software\Policies\Microsoft\Windows NT\DiskQuota" valueName="ApplyToRemovableMedia">
      <parentCategory ref="DiskQuota" />
      <supportedOn ref="windows:SUPPORTED_Win2k" />
    </policy>
  </policies>
</policyDefinitions>

Ms-Dos/Windows Unix Write backup

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