So it would be useless to buy a Win7 upgrade disc if you have XP?
Not if you put in rc version of windows 7 correct? If you had windows 2000 and then put in the beta windows 7 you could still purchase the upgrade version and install. In fact now that I think about it if you put in a new hard drive you could still use the upgrade version and do a clean install
Question: Who would buy the full version except somebody that doesn't know the difference?
My download upgrade didn't ask for an Windows OS disk. I was upgrading from XP, so I had to create an .iso from the download as it wouldn't run as-is. To clean install on a fresh HD I had to attach my old HD (via USB, as it happens) during installation so it saw I had a valid version of Windows. If I didn't do this, it wouldn't accept my product key, either at installation or trying to activate it once installed. However, proper DVD installers might be different.Usually it will search for a previous installation. If it can't find one then it will ask you to place a windows os disk in the drive to validate. Once done it will then continue to upgrade..
I am wondering that myself. I have never used the upgrade disk, and do not use XP, so cannot comment further.Not if you put in rc version of windows 7 correct? If you had windows 2000 and then put in the beta windows 7 you could still purchase the upgrade version and install. In fact now that I think about it if you put in a new hard drive you could still use the upgrade version and do a clean install
Question: Who would buy the full version except somebody that doesn't know the difference?