Family pack upgrading. No previous version necessary?
I stop at BB last night and bought a family 3-pack of Home Premium upgrades for $150. Obviously the best deal out there for W7 licenses unless you're a student. I have 2 laptops, one with XP, one with Vista x32. I also have my gaming rig which I've just been running W7 RC1 on. I set up a dual boot on the gaming rig last night and did the "upgrade" as a fresh install on it's own partition. The key code was accepted fine, and once the OS was up and running, the activation took a mere 10 seconds.
Now the question: At no point did the upgrade ask about a previous version of Windows. It appeared that I could have just installed the upgrade on a fresh hard drive with no questioning about previous versions like Vista did when I upgraded to it from XP. I was at least expecting it to ask for a license key from a previous version, but it did nothing of the sort. How can that be?
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It doesn't ask, if it detects a previous legal activated version it installs, as you found, if you didn't have a previous activated OS the instalation would have failed.