I was trying to watch "Windows 8: Windows To Go Overview" and "Deploying Windows 8 with the Microsoft Deployment Toolkit (MDT)" from tech ed 2012 North America using channel 9 but as a matter of fact these two videos are removed exclusively and I believe they were removed because Windows 8 was in a beta phase when the events were done but now Windows 8 is released and I believe the videos should get back online.