Hello everyone - I am a long time reader, first time poster. I have successfully created an unattended, bootable .iso for Server 2008 R2 using vLite. I have also played around with RT Server Customizer utility. However, I noticed that if I try to open the iso with MagicISO, modify the Autounattend.xml file, and save as a new iso, the new iso will no longer work even though I have not modified anything in the OSImage fields of the xml file. I get the following error message: "Windows could not collect information for [OSImage] since the specified image file [install.wim] does not exist." Even without using a utility such as vLite, I thought that all one has to do is create an Autounattend.xml file and save it in the root of the iso (or DVD) and it will work as long as the .xml format is correct. It appears however, when using vLite or RT Customizer the install.wim file is being modified so just saving a "working" Autounattend.xml file to the root of the iso or disc does not work. Is there a way to create an unattended, bootable .iso for Server 2008 R2 just using WAIK, a bootable Server 2008 iso, and MagicISO? Having to load the install media for every small modification and then saving a new iso is taking forever... Thanks in advance for your help!