Upgrading Windows 8 to 8.1 [Native VHD Boot]

Hey folks,

I've got Windows 8 RTM running in a native VHD on my Dell Latitude E6430. I just tried to initiate the upgrade to Windows 8.1 by extracting the Windows 8.1 ISO with 7-Zip, and launching setup.exe from the extracted folder. Unfortunately, when I tried to initiate the upgrade, I got an error message saying "You can't install Windows on a virtual drive." Does anyone know what this means?

Obviously, I already have Windows 8 running in a native VHD, so I would expect to be able to perform an upgrade of the operating system, just as if it were installed directly onto a physical partition. Is it only possible to do new installations of Windows 8? Is it not possible to perform an upgrade of an operating system running in a native VHD?

Cheers,

Trevor Sullivan

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