Public/OSDCloud/Set-OSDCloudUnattendSpecialize.ps1

function Set-OSDCloudUnattendSpecialize {
    [CmdletBinding()]
    param ()
#=======================================================================
# UnattendXml
#=======================================================================
$UnattendXml = @'
<?xml version="1.0" encoding="utf-8"?>
<unattend xmlns="urn:schemas-microsoft-com:unattend">
    <settings pass="specialize">
        <component name="Microsoft-Windows-Deployment" processorArchitecture="amd64" publicKeyToken="31bf3856ad364e35" language="neutral" versionScope="nonSxS" xmlns:wcm="http://schemas.microsoft.com/WMIConfig/2002/State" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance">
            <RunSynchronous>
                <RunSynchronousCommand wcm:action="add">
                    <Order>1</Order>
                    <Description>OSDCloud Specialize</Description>
                    <Path>Powershell -ExecutionPolicy Bypass -Command Start-OSDCloudSpecialize -Verbose</Path>
                </RunSynchronousCommand>
            </RunSynchronous>
        </component>
    </settings>
</unattend>
'@

    #=======================================================================
    # Block
    #=======================================================================
    Block-WinOS
    Block-WindowsVersionNe10
    Block-PowerShellVersionLt5
    #=======================================================================
    # Directories
    #=======================================================================
    if (-NOT (Test-Path 'C:\Windows\Panther')) {
        New-Item -Path 'C:\Windows\Panther'-ItemType Directory -Force -ErrorAction Stop | Out-Null
    }
    #=======================================================================
    # Panther Unattend
    #=======================================================================
    $Panther = 'C:\Windows\Panther'
    $UnattendPath = "$Panther\Start-OSDCloudSpecialize.xml"

    Write-Verbose -Verbose "Setting $UnattendPath"
    $UnattendXml | Out-File -FilePath $UnattendPath -Encoding utf8 -Force
    #=======================================================================
    # Registry Unattend
    # HKEY_LOCAL_MACHINE\System\Setup\UnattendFile
    # Specifies a pointer in the registry to an answer file
    # The answer file is not required to be named Unattend.xml
    # https://docs.microsoft.com/en-us/windows-hardware/manufacture/desktop/windows-setup-automation-overview
    #=======================================================================
    Write-Verbose -Verbose "Setting Unattend in Offline Registry"
    reg load HKLM\TempSYSTEM "C:\Windows\System32\Config\SYSTEM"
    reg add HKLM\TempSYSTEM\Setup /v UnattendFile /d "C:\Windows\Panther\Start-OSDCloudSpecialize.xml" /f
    reg unload HKLM\TempSYSTEM
    #=======================================================================
}