https://www.petervanderwoude.nl/post/how-to-capture-user-files-and-settings-offline-winpe-or-online-fullos-using-hard-links-with-configmgr-2012-b2/
How to Capture User Files and Settings Offline (WinPE) or Online (FullOS) using hard-links with ConfigMgr 2012 B2