What is on-the-fly paging in operating systems?

We're not your personal computing reference. Go do some research instead of bothering people with questions that could be easily answered by searching the web or reading manuals.

Never heard of "on the fly paging". The closest thing I can think of is "demand paging". It means that things like executable files and dlls are mapped to a range of memory, but it only goes and reads from disk if the program touches those areas of memory that correspond to the file.

http://en.wikipedia.org/wiki/Demand_paging

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