gpo-edit

<#
$xmlText = @”
<? Xml version=”1.0” encoding=”uft-8”>
	<Drives clsid=”{letter-number-string}”>
		<Drive clsid=”{letter-number-string}”>
			<Properties action =”R” thisDrive=”SHOW” allDrives=”NOCHANGE” username= “” etc..>
			<Filters>
				<FilterGroup bool=”AND” etc….>
</Filters>
		</Drive>
</Drives>
”@
#>

$xmlPath = Path\to\gpo\properties\xml

$xmlData = [xml] (get-content -Path $xmlPath)

$oldFilter = @($xmlData.Drives.Drive.Filters.FilterGroup)[0]
$oldFilter.bool = “OR”

$newFilter = $oldFilter.Clone()
$newFilter.bool = “OR”
$newFilter.name = “thisIs\MyName”
$newFilter.sid = “my-s-i-d”

$xmlData.Drives.Drive.Filters.AppendChild($newFilter)

($xmlData).Save($xmlPath)