when do OSD with MDT or WDS , I can add or edition the answer file(Unattend.xml) so that all steps auto finished. Now I start to learn OSD just by SCCM, how can I make the osd auto-install? I means that after the reference computer, it auto-select the TS, then auto-install, then login in OS with the administrator account. by adding [Unattend.xml] or edition the TS? I can't find more information on internet. waiting for your answer and thanks.

That doc should get you started: http://www.microsoft.com/downloads/en/details.aspx?displaylang=en&FamilyID=defbf5ab-7d60-402b-a58e-5cccc4932a12.

Also, here is official links: Windows 7 Deployment Using SCCM 2007 SP2 http://blogs.technet.com/b/birojitn/archive/2010/01/20/windows-7-deployment-using-sccm-2007-sp2.aspx (Video)Automating Windows 7 Deployment http://technet.microsoft.com/en-us/edge/automating-windows-7-deployment.aspx Hope it helpsPlease remember to click Mark as Answer on the post that helps you, and to click Unmark as Answer if a marked post does not actually answer your question. This can be beneficial to other community members reading the thread.