robert_e_bone
If you install Win 8 to a different partition, it will be a clean install to that partition, and you would have to install each and every application you wanted to run in Windows 8.
If you can run a backup of your system to an external drive (you should already have something in place for running and storing backups, right???), once you have a full image, run the Win 8 install as an update, choosing the keep all settings and applications option.
Bob Bone
I know this, that is why I wanted a migration tool. One that would move Windows 7 to Windows 8.
I have Windows features spread over 6 different drives: Pagefiles, Search, Rip Folder, Documents folder, Desktop, etc. etc.
If I update (upgrade-in-place) to Windows 8, I may need to check all these things carefully. Some Windows Tools (such as Network Monitor 3 and Visual Studio 2008) don't even navigate to the User directory properly (they assume C:\User\<name>). But if I install clean to a new partition I can keep it's defaults and not touch Win7. Then the migrate would move the Win 7 changes to Win 8.
I have full backups of all partitions, but a restore of everything would take about a day - it takes that long to make images of all the 12 Terabytes of crap I've accumulated over the decades. And another day to make the last-minute image before the upgrade.
But anyway, even if there were a migration tool, who knows what bugs that may introduce - it may be worse than an upgrade-in-place.