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Is it true that files for running programs don't get defragged?


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Is it true that files for running programs don't get defragged? I saw that here in a reply, but I've never seen a defragger say that in its Help.


The Windows XP defragger doesn't say anything about not running programs while defragmenting.

The closest it comes is

Defragment file server volumes during low-volume usage periods to minimize the effect that the defragmentation process has on file server performance.
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Absolutely all the Google finds end up at http://www.abexo.com/defrag.htm when you search the pages. Take a look at this one, for instance. http://defrag-file.softplatz.net/2.html


Only Abexo ever says any such thing. It may have been true of ancient defraggers but it's not true of the XP defragger, Auslogics defragger, Defraggler, or your own Smart Defrag.


Urban legend!

And I personally never heard of Abexo before. Seems they do extraordinary things like removing the pagefile. :shock:

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A running program is completely in memory, either in RAM or in virtual memory (the swap file, pagefile.sys). Any decent defragger can defrag a program's disk file while it is running.


"All programs running in the background" would include all Services. You can't close them even if you go into services.msc and stop all of them (which would crash Windows).


However closing as many running programs as possible is still a good idea, as it frees up more resources for the defragger.

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