http://blogs.technet.com/quenguyen/archive/2009/05/27/installing-windows-7-from-a-usb-stick.aspxI found the steps from the below article: http://www.intowindows.com/how-to-install-windows-7vista-from-usb-drive-detailed-100-working-guide/ Make sure your USB stick is big enough to accomodate the Windows 7 installation bits. And here below is the summaryen-USCommunityServer 2.1 SP1 (Build: 61025.2)http://blogs.technet.com/quenguyen/archive/2009/05/27/installing-windows-7-from-a-usb-stick.aspx#3253659Thu, 11 Jun 2009 22:07:50 GMTd5e57398-b9ef-4490-9955-07cbb4e4a80d:3253659anas<p>hi </p> <p>when im applying this steps &nbsp;</p> <p>and restart my pc &nbsp;</p> <p>see &nbsp;message </p> <p>missing operating system</p> <p>why seen this message </p>