Adding and managing legacy boot wims into SCCM is a pain….. the removal of GUI options for non-current versions makes things more painful than they need to be…. and the instances of newer versions of ADK (such as ADK 2004) being incompatible with certain things, seem to be increasing.
Adding command prompt to a legacy boot wim is substantially less than intuitive – so im leaving this here as a quick reference for myself!
connect to \root\sms\site_<sitecode>
sms_bootimagepackage.packageID=”<boot image package ID>” (quotes are required)
Set “EnableLabShell” to TRUE, save property, then save object
Re-open the boot image and verify the property is set