If your screen saver (the most common) is turned on, it can affect this.
I always turn any screen savers off before starting Disk Defragmenter.
Also, you might want to check your power settings and set them to
"never" turn anything off, before starting. Good luck!

   Tom


Alex E Onslow wrote:
>
> A couple of days ago I decided to defrag my hard drive because I hadn't done
> it in a while. The problem is it kept restarting over and over again because
> 'the drive contents had changed' even though I wasn't doing anything on
> computer while it was defragging. Is this normal? It did defrag the whole
> drive eventually but it took around 4 hours. My hard drive is 20gb, by the
> way. I don't know the speed of it.
>
> Alex Onslow
>
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