On Tue, 17 Jan 2012 15:39:15 -0500, Zaphod Beeblebrox
In message <
[email protected]>, TheGunslinger
[]
it makes no sense to destroy backward compatibility, is this true?
thank you
There are three major versions of Windows 7: 32-bit (x86) and 64-bit
(x64) and IA64.
What is the third one - I mean, how does it differ from the other two?
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A lot of legacy software contains or is 16-bit based. Windows 7 64-bit
only supports 32-bit and 64-bit.
Why? I don't mean technically why - I'm sure you can tell me that
(incompatible file versions and so on), I just mean why was that
decision made? Like Maurizio, I am puzzled by it.
Likely, it was because the additional layer of code required to support
it was too much bloat (heh - now there's a thought, MS thinking a
feature might add too much bloat!), especially for the relatively few
users who actually need it.
That, or just wanting to make a cleaner break - legacy support is a
major impediment to future growth.
As a result, Windows 7 64-bit ONLY uses the latest version of
Microsoft Virtual PC.
HOWEVER, if you install Windows 7 32-bit, you can install Microsoft
Virtual PC 2007 for legacy OS's, you can install XP, Windows Millenium
and 98, AND MS-DOS 6.22.
In particular, that puzzles me. Even if there is some reason not to
support legacy software in the underlying OS, not supporting it via an
emulator seems a`_very_ odd decision, bordering on the vindictive!
I think either MJR mis-spoke or you misunderstood.
Windows 7 64-bit Pro / Enterprise (and Ultimate, I think I forgot that
in earlier posts) all support XP mode, which runs a 32-bit version of
XP, which will run 16-bit and balky 32-bit software just fine. Also,
the latest version of MS Virtual PC can run XP 32-bit, with the same
capabilities.
Finally, if you are running a 32-bit version of Windows 7, you don't
need the emulator / virtual machine at all, it will run most XP-
compatible 32-bit and most 16-bit software just fine without an
emulator / virtual machine.
Zaphod, Sorry, I didn't misspeak.
I have 5-PC's set-up my house. I am such a geek. /sigh