Windows Setup uses the WAIK API to install Windows.

The first distributed prototype of ImageX was built 6.0.4007.0 (main.030212-2037). It allowed Microsoft OEM partners to experiment with the imaging technology and was developed in parallel with Longhorn alpha prototypes. It was first introduced in Milestone 4 into the Longhorn project and used in later builds of Longhorn. Build 6.0.5384.4 added significant advantages over previous versions, like read-only