http://blogs.technet.com/b/askcore/archive/2008/09/22/upgrade-error-when-using-select-action-pack-media-on-a-hyper-v-vm.aspxYou may encounter the following dialog box with attempting to upgrade an existing Operating System The text of the dialog box reads: Upgrade has been disabled The upgrade cannot be started because you are running a 64-bit version of Windows and are tryingen-USTelligent Evolution Platform Developer Build (Build: 5.6.50428.7875)http://blogs.technet.com/b/askcore/archive/2008/09/22/upgrade-error-when-using-select-action-pack-media-on-a-hyper-v-vm.aspx#3129945Mon, 29 Sep 2008 17:21:32 GMTd5e57398-b9ef-4490-9955-07cbb4e4a80d:3129945Shahed Khan (MVP C#)<p>196 Microsoft Team blogs searched, 97 blogs have new articles in the past 7 days. 218 new articles found...</p> <img src="http://blogs.technet.com/aggbug.aspx?PostID=3129945" width="1" height="1">