If you would like to merge all the editions of Windows 7 in a single DVD, here is a simple step by step guide. This guide will show you how to create Windows 7 All In One DVD, which will have all x86 and x64 editions of Windows 7, including Enterprise editions.
Before you start, do ensure that you have the following ready:
- Windows 7 DVD/ISO (x86 & x64) – You can choose any edition, because the DVD holds all the editions i.e. Starter, Home Basic, Home Premium, Professional and Ultimate.
- Windows 7 Enterprise DVD/ISO (x86 & x64) – Windows 7 Enterprise is not available through retail channels.
- Windows Automation Installation Kit (WAIK for Windows 7)
- Blank DVD (DVD5 – 4GB in size) compatible DVD Burner and CD/DVD burning software (like ImgBurn)
At the end of the exercise, you will have a single DVD holding all the editions of Windows 7!

Check out the complete guide at WindowsValley.
This guide applies to:
* Windows 7 family
* Windows Vista family
* Windows Server 2008
If you have liked this post, you might want to check out some more, on topics like Installation, Tips.