Microsoft's official position on the downgrade of Vista to XP Pro:
Link 1
Link 2
(I know those are 3rd party links but they are direct quotes from the .doc files you can download from microsoft.com)
The information states:
"End users can use the following media for their downgrade: Volume Licensing media (provided the end user has a Volume Licensing agreement), Retail (FPP), or System Builder hologram CD (provided the software is acquired in accordance with the Microsoft OEM System Builder License)"
but where does the serial number come from. If you buy a new PC with Vista and want to downgrade to XP they above information suggests that you buy a copy of XP retail and use its code. If you do this you haven't downgraded anything you bought another copy of XP. So if you buy a computer with Vista on it and get access to a retail XP pro disk how and where do you get the serial number to install and activate XP?
Link 1
Link 2
(I know those are 3rd party links but they are direct quotes from the .doc files you can download from microsoft.com)
The information states:
"End users can use the following media for their downgrade: Volume Licensing media (provided the end user has a Volume Licensing agreement), Retail (FPP), or System Builder hologram CD (provided the software is acquired in accordance with the Microsoft OEM System Builder License)"
but where does the serial number come from. If you buy a new PC with Vista and want to downgrade to XP they above information suggests that you buy a copy of XP retail and use its code. If you do this you haven't downgraded anything you bought another copy of XP. So if you buy a computer with Vista on it and get access to a retail XP pro disk how and where do you get the serial number to install and activate XP?