Edit C:\Windows\PolicyDefinitions\SystemRestore.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="systemrestore" namespace="Microsoft.Policies.SystemRestore" />
    <using prefix="windows" namespace="Microsoft.Policies.Windows" />
  </policyNamespaces>
  <resources minRequiredRevision="1.0" />
  <categories>
    <category name="SR" displayName="$(string.SR)">
      <parentCategory ref="windows:System" />
    </category>
  </categories>
  <policies>
    <policy name="SR_DisableConfig" class="Machine" displayName="$(string.SR_DisableConfig)" explainText="$(string.SR_DisableConfig_Help)" key="Software\Policies\Microsoft\Windows NT\SystemRestore" valueName="DisableConfig">
      <parentCategory ref="SR" />
      <supportedOn ref="windows:SUPPORTED_Windows7" />
      <enabledValue>
        <decimal value="1" />
      </enabledValue>
      <disabledValue>
        <decimal value="0" />
      </disabledValue>
    </policy>
    <policy name="SR_DisableSR" class="Machine" displayName="$(string.SR_DisableSR)" explainText="$(string.SR_DisableSR_Help)" key="Software\Policies\Microsoft\Windows NT\SystemRestore" valueName="DisableSR">
      <parentCategory ref="SR" />
      <supportedOn ref="windows:SUPPORTED_Windows7" />
      <enabledValue>
        <decimal value="1" />
      </enabledValue>
      <disabledValue>
        <decimal value="0" />
      </disabledValue>
    </policy>
  </policies>
</policyDefinitions>

Ms-Dos/Windows Unix Write backup

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