Quote: Originally Posted by ChadClancy
I'm confused, what does that mean??
Are you saying that it's not possible if you are going from say 32 bit Vista to 64 bit Windows 7??
Pretty sure that's what he intended to say (think he meant if your bits don't match). In any event, what you're saying is correct - you cannot upgrade from a 32 bit version of vista/xp to a 64 bit version of windows 7 w/o using a bootable dvd.
Quote: Originally Posted by ghettobanjo
ok so has anyone been successful burning the ISO, formatting and then installing?? From what I have read, if you format first, then the product key will not work. Seems like you should be able to just put in a Vista disc to prove you have a legal copy of that and then install this "upgrade". I'm at work just getting more and more worried about what will happen to me tonight when I take the plunge. I really want a clean install....
Once you boot into the iso you can choose to format the drive during the windows 7 installation and it won't mess you up even if you're upgrading (note that the option to do this is available when the installer asks you which drive you want to install on - I believe you may have to click on a little button at that time that says show advanced options for it to appear). I did this upgrading from windows xp 32 -> windows 7 64.
Note that even if you don't format I think it's a "clean" install in the sense that windows 7 isn't relying on any of your old os files but you will have some remnants of your files stored in a windows.old folder that the install creates.
FINAL NOTE OF INTEREST: I have used the upgrade key to successfully activate two different machines (I've been messing around with different installation options). Not sure what the activation limit is for the upgrade code but it's definitely > 1.