When you try to install Windows Vista, you cannot select
the
Upgrade option in the
Install Windows dialog box.
Additionally, you receive the following error message in the
Install Windows dialog
box:
Upgrade has been disabled
- To upgrade, start the
installation from Windows
This issue may occur if you run Setup by using the Windows
Vista installation media.
To resolve this issue, use one of the following methods.
Method 1
If you are trying to install Windows Vista on a computer that
currently has no installed operating system, click
Custom (advanced) on the
Which type of installation do you want?
screen.
Then, perform a clean installation of Windows Vista.
Method 2
If you are trying to upgrade your current installation of Windows
to a 32-bit version of Windows Vista, exit Setup, restart the computer
by using the currently installed version of Windows, and then restart the
Windows Vista installation process.
For more information, click
the following article number to view the article in the Microsoft Knowledge
Base:
932616Â
(http://kbalertz.com/Feedback.aspx?kbNumber=932616/
)
Installation choices for consumer versions of Windows Vista (32-bit only)
Method 3
If you are trying to upgrade your current installation of Windows
to a 64-bit version of Windows Vista, you must perform a clean installation of
Windows Vista.
Note Make sure that you back up all data on the computer before you
run the installation process. Then, restore the data to the newly installed
Windows Vista system.
For more information about how
to install Windows Vista, click the following article numbers to view the
articles in the Microsoft Knowledge Base:
932795Â
(http://kbalertz.com/Feedback.aspx?kbNumber=932795/
)
Installation choices for 64-bit consumer versions of Windows Vista
918884Â
(http://kbalertz.com/Feedback.aspx?kbNumber=918884/
)
How to install Windows Vista
919183Â
(http://kbalertz.com/Feedback.aspx?kbNumber=919183/
)
System requirements for Windows Vista