Kees The first guy must have tried to upgrade using an OEM version. The second guy must have been using either an UPGRADE version or a FULL version.
I, personally don't like Upgrade Versions because I got stuck with one once.
When Vista came out, I checked the Update Advisor and it said I could upgrade from Windows XP Professional to Windows Vista Home Premium, so I bought the Upgrade version.
Is kinda-sorta like being painted into a corner when one only has one hard drive. I guess that I have the Win XP Pro program and just thought I would try to upgrade my present computer, which I put together from a couple of other computers. How can I upgrade my Windows XP Home to Windows XP Professional.I have SP 3 on my home edition and when I insert my copy of Windows XP Professional in the drive and try to install it says that it can not due to the fact that my copy is newer than the XP Professional morcomp, To do what you want to do, you must make a Slipstream Installation Copy of XP Professional with Service Pack 3.This doesn’t install or add all the features from Windows XP Professional, such as Remote Desktop Server (Install Remote Desktop on XP Home) and Group Policy Editor (GPedit) utility tools, which was removed from Windows XP Home edition.Some functions which turned off and disabled via integrated switches which read from registry flag whether it’s Home or Professional edition, such as EFS, RAID support and ability to join domain, may or may not work after migration.