Install ANY version of Windows 7 by making your own USB install drive | Windows 7 Center
Microsoft had recently released a utility that allowed you to make a USB memory stick to install Windows 7 on computer’s that did not have a DVD drive. However Rafael Rivera of the “Within Windows” blog pointed out that the tool contained some GPL v2 licenced code and Microsoft have now quickly removed it from their web site. UPDATE: Microsoft has admitted that they violated the GPL v2 licence and have now released the tool under open source. In any case the instructions below show you how to build a much better bootable USB install memory stick that allows you to install ANY version of Windows 7.
If you have bought multiple version of Windows 7 and compared the DVD’s you might have noticed that they are the same with the exception of one file (ei.cfg). This one file tells Windows what version to automatically install during the install process. Because all the DVD’s are essentially the same you can use any Windows 7 DVD to perform a version upgrade of Windows 7 using the “Upgrade Anytime” option.
Now to make this bootable universal Windows 7 install USB memory stick you will need at least one Windows 7 DVD 32bit or 64bit depending on what version you want to install and a blank 4gb USB memory stick. Note you will need to create a separate 32 or 64bit USB memory stick of Windows 7 but it will let you install the different SKU’s.
To see how! Just follow the steps by clicking on the link below!