I'm looking for a way to call upon the path of a file that is located on a USB drive where the letter may change depending upon the PC it is inserted into. This is for unattend.xml file under the FirstLogonCommands.
<SynchronousCommand wcm:action="add">
<Order>2</Order>
<CommandLine>netsh wlan add profile filename="E:\Wi-Fi-Example.xml"</CommandLine>
</SynchronousCommand>
(Not sure if it matters but I use one USB drive with the Windows install and another USB drive for answer files)