[thefronny]

I have a 6.3 box which runs with no issues at all so of course I want to upgrade it to 6.4. But I can't remember if the 6.3 was a fresh install (likely) or Upgrade run on a 6.2 install. Files or something must be left behind to indicate status because Install will tell me if the target system can or can not use Upgrade because it has or has not already been Upgraded once. What might that be? Other than just running Update and seeing what it says.