You can try uninstalling SP1 from the existing Home Premium version, then
installng via upgrade from your slipstreamed disk.
But, no guarantees as your disk is an unknown quantity!!
--
Mick Murphy - Qld - Australia
"3putt in coastal SC" wrote:
Quote:
> I've burned a new Vista Ultimate install disk slipstreamed with SP1 using
> Vlite. However...it will only perform a clean install, and not an upgrade
> on the existing Home Premium with SP1. I want to ?upgrade to Vista
> Ultimate. Running install with the slipstreamed Vista Ultimate w/SP1 I get
> these statements: "Upgrade has been Disabled" The upgrade cannot be
> started. To upgrade cancel install, then choose to upgrade to a version
> that is more recent than currently running" Is it because my current Vista
> Home Premium w/SP1 has been upgraded to the latest updates? And the
> slipstreamed DVD files are older, even with the downloaded SP1 files from
> Microsoft?
>
>