http://blogs.technet.com/techblog/archive/2009/04/30/windows-7-rc-clean-installation-required-and-other-caveats.aspxAs you may have heard, the Windows 7 Reelease Candidate is now available to MSDN, MSDNAA and TechNet Subscribers, and the general public. Some things to be aware of with the Windows 7 Release Candidate: You must do a clean install of this release. Pleaseen-USCommunityServer 2.1 SP1 (Build: 61025.2)http://blogs.technet.com/techblog/archive/2009/04/30/windows-7-rc-clean-installation-required-and-other-caveats.aspx#3254694Mon, 15 Jun 2009 00:08:17 GMTd5e57398-b9ef-4490-9955-07cbb4e4a80d:3254694stoobee<p>You said, &quot;You must do a clean install of this release.&quot;</p> <p>That is a rather emphatic statement and is also untrue. Without going into specifics, I upgraded RC WIN 7 from Vista Premium. With the exception of three applications, the OS works flawlessly and compared to Vista, is a joy to use.</p> <p>Stu</p>