Windows Setup Support Change

Starting with ConfigMgr 2012 SP 1, Microsoft supports directly using the install.wim image file from Windows source media and this now works correctly within a ConfigMgr task sequence. Previously, direct use of this image file installed Windows to the logical D: drive (rarely desired). This was often a technical challenge because administrators and applications normally assume the C: drive is used. To account for this when directly using the image.wim file, you must properly set the OSDPreserveDriveLetter task sequence variable as discussed later in this section.

Directly using image.wim means you could completely skip building a reference image for your deployments. However, this has security implications as this ...

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