Title: Don't try this at home!
Product review: I purchased this to upgrade from Windows Vista Home Premium to Windows Vista Ultimate so that I could run Virtual PC 2007. The first time I tried the upgrade it failed (after about 3hours) with a non-specific error: Windows was unable to upgrade a component or components. I tried it again with the help of Microsoft phone support. The second time it also failed but it also took out my hard disk so that I had to restore it from my latest backup. This product is still in the alpha stage. Don't buy it unless you have at least 8 hours to play around with it. It is not a stable product.
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