Re: 32 bit installs but not 64 bit

""Darrell Gorter[MSFT]"" <Darrellg@xxxxxxxxxxxxxxxxxxxx> wrote in message
Hello Curious,
You actually can install 64-bit from with-in a 32-bit version of Windows.
The 32-bit setup.exe as well as the 32-bit Boot.wim(WinPE) can be used to
setup 64-bit Windows.
There are deployment scenarios where this is required, so if you replace
those you could do it.
32-bit setup.exe supports installing 64-bit Windows ( x64 bit Windows not
Itanium of course)

Clean install only of course.

Darrell Gorter[MSFT]

You cannot install 64 bit Vista from 32 bit Vista or XP. It will give an
error message to that effect, and the installation will terminate.