From DOS 5.0 to Windows 7: Tracking Microsoft’s upgrade process

Ever had the urge to put one computer through 20 years of Microsoft Windows history?

Andrew Tait (or “TheRasteri” on YouTube) did. He decided to take one virtual machine and put it through the upgrade process from MS-DOS 5.0 all the way to Windows 7, and test out whether settings stuck and programs still worked.

Link – http://blog.seattlepi.com/microsoft/2011/03/03/from-dos-5-0-to-windows-7-tracking-microsofts-upgrade-process/