How does /burnmemory=XXX boot.ini switch work?

Posted by user371602 on Super User See other posts from Super User or by user371602
Published on 2011-06-23T19:24:52Z Indexed on 2011/06/24 16:25 UTC
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Windows

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operating-systems

I know what the /burnmemory switch does on Windows, but I'd like to understand what Windows is doing under the hood to support it.

It's described on msdn as the "amount of memory, in megabytes, that Windows cannot use".

Does this mean simply that the kernel does not allow user virtual memory mapping into this area? How is this accomplished in the kernel, and are there other restrictions that the kernel will make when burnmemory is set?

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