The following steps describes a short introduction into how you can create (or re-create) a Default SCCM Boot Image (with integrated Windows PE 4.0) for Microsoft System Center Configuration Manager 2012 ServicePack 1. This article refers to full installation of Microsoft System Center Configuration Manager 2012 with Service Pack 1 and WDS (PXE-Role) enabled.
COPYPE.CMD x86 c:\WINPE86 COPYPE.CMD amd64 c:\WINPE64 COPYPE.CMD arm c:\WINPEARM
NOTE: If you are using Windows 7 WAIK there are different steps to do!