This is usually a driver problem. You probably need to install a driver for
your hard drive controller. What hard drive controller do you have?
--
Kerry Brown
Microsoft MVP - Shell/User
http://www.vistahelp.ca
"Jeff" <Jeff@discussions.microsoft.com> wrote in message
news:0896843D-7A97-4C71-B7D7-E9190350E578@microsoft.com...
> Dear all,
>
> I recently purchased the Vista Upgrade pack to move from XP to Vista. I
> purchased it from the markettrader so it is stored locally on my hard
> drive.
>
> Upon rebooting to continue installation I end up with the error
> Unmountable_boot_volume.
>
> I have tried searching for this term and find a lot of issues for people
> upgrading to Windows XP, but cant seem to find a solution that works for
> me.
>
> I was able to revert back to my XP installation with no problems.
>
> any advice would be highly appreciated.
>
> Thanks in advance,
> Jeff