Walt Mossberg requested and got from MS an official Windows 7
upgrade chart.
<http://mossblog.allthingsd.com/20090804/deciphering-windows-7-upgrades-the-official-chart/
>
It has *only* 66 upgrade scenarios in it, as it merely considers half
of the versions of Win7 that MS will be offering. The chart is
horrible,
there is a discussion of that and a much improved version of it at
<http://blogs.zdnet.com/Bott/?p=1246>,
where you can also read about a workaround for an upgrade path that
MS won't let you do directly but which a lot of people are likely to
want.
Why won't MS enable you to upgrade directly from Vista Home to
Windows 7 Professional instead of doing an annoying workaround?
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