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cbspectre

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whats the difference between Vista and 7's engine

I am just curious about why Vista can get an In-place upgrade and XP cant. If 7 uses the same "engine" as Vista, then why is 7 so much better then Vista? I am not looking for features that are based on user experience, but technical reasons that include Threads, memory management, and details of the hardware control. Thanks
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Lee W, MVP
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What do you mean by "engine"?  Do you mean kernel?  The kernel is DIFFERENT between products.  Microsoft simply chose not to dedicate the resources required to ensure a direct upgrade would work.  They decided to make XP eligible for upgrade pricing, but they weren't going to otherwise support it.  

Most people who deal with deploying Windows don't WANT to upgrade - they would be HAPPIER if Microsoft didn't permit upgrades PERIOD.  A clean system ensures no legacy problems from drivers, software, etc.
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arnold
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cbspectre

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Thank you for the response. I guess I was talking about the "kernel". Everything up to Vista (after ME) seemed to be "Built on NT Technology" ( as the promotion would say) I am trying to find out if 7 is "built on Vista technology" I am assuming NOT. I cannot find this info "googling" thought you would know a. if it is, and b. If it isn't what is the significance of the new 7 system. It is hands and feet away greater then Vista.
Thanks again.
Vista and Windows 7 are BOTH based on NT technology.
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