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What is a Windows System File (.SYS)? How the Windows invoke these files?

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migrated from Feb 24 '10 at 10:03

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they are device drivers.. – vpram86 Feb 24 '10 at 9:35
@user280140 - SO is about programming questions, and since your question is not one, it will probably get closed and moved to, which is a better forum for this kind of question. – Oded Feb 24 '10 at 9:35
up vote -1 down vote accepted

they are device drivers. When installed they have certain registry values on when to invoke them. They usually run in kernel space

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