[Novalug] 64bit vs 32bit (was FOSE wrapup)

[Richard Rognlie]

On Fri, Apr 04, 2008 at 09:24:24AM -0400, Pete Nuwayser wrote:
> I agree with Greg:  a 64-bit OS will not run on 32-bit architecture,
> but 32-bit OS will run on 64-bit architecture.

And to further complicate matters, there are times when a 64bit CPU can
not accept a 64bit OS.

I ran into this with VMware.  

Dell 1850 server.   64bit CPU.  64bit OS on the box.

But I am unable to install a 64bit "guest" OS on the box due to the
CPU lacking the "VT" (virtualization technology) flag.

Had to get a 1950 to get the CPU upgrade...

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