XP Defrag Leaves Many Fraged Files

July 14, 2005 at 07:32:16
Specs: XP, 512 MB

I am viewing my most recent report following a disk defragmentation session. The session was conducted following a
scandisk/chkdisk session.

The XP disk defragmentation "analysis" indicated that defragmentation wasn't necessary, but I ran it anyway.

After only 2 minutes or so, the XP disk defragmentation utility, upon completion, reported that "some files cannot be

OF 28,000+ files, 1630 are reported to be fragmented.

This is the first time since I purchased the computer that I've experienced this outcome.

Is this common? Should I be concerned?

the computer shows no sighs of trouble, and scandisk/chkdish reported no problems.

Can anyone shed some light as to why all of these fragmented files cannot be defragmented, and if it is necessary to get a fix of
some sorts?

See More: XP Defrag Leaves Many Fraged Files

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July 14, 2005 at 07:58:20

Best to defrag in Windows Safe-Mode.
A Description of the Safe Mode Boot Options in Windows XP

From M$:

Optimizing Startup Times by Using Defragmentation Tools

Windows XP Professional monitors the files that are used
when the computer starts and when you start applications.
By monitoring these files, Windows XP Professional can
prefetch them. Prefetching data is the process whereby
data that is expected to be requested is read ahead into
the cache. Prefetching boot files and applications
decreases the time needed to start Windows XP Professional
and start applications.
Prefetching is further improved if the files are located
next to each other on the outer edge of the disk. Windows
XP Professional optimizes the location of boot files and applications when the computer is idle. The optimization
occurs in the background and lasts only a minute or two;
you might hear the hard disk being accessed when
optimization occurs. After the initial optimization takes
place, subsequent optimization occurs, at most, every three days.

When you run the Disk Defragmenter tools that are included
with Windows XP Professional, they can perform any
optimization updates that are scheduled to take place
during the next idle period. The Disk Defragmenter tools
do not disturb the existing layout of optimized boot files and applications.


* Computers running Windows XP Home Edition also prefetch
and optimize boot files and applications.
Also before doing Defrag, try this:
Also check all the files in
The Prefetch folder is quite large.
I have deleted all files there, even
Layout.ini, at times without problems.
It will rebuild itself over time.

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July 14, 2005 at 08:12:30

Chuck 2

thnaks for your prompt reply.

I am confused though...are you saying that these "Prefetch" files are the ones that remain fragmented and cannot be defraged by the XP defrag utility?

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July 14, 2005 at 08:23:55

Yes. They are placed, by XP, at the outer edge of the harddrive for faster opening of programs,
and are not moved by Defrag.
Also some major system files, I hear, are not moved.

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Related Solutions

July 14, 2005 at 08:28:45

Also check this out...

Files That You Cannot Defragment


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July 14, 2005 at 08:35:23

As an FYI before you run defrag, follow M$ tips HERE


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July 14, 2005 at 11:32:40

Hi friends... Very good advice about deleting/cleaning out that prefetch folder. I do mine often with absolutely problems at all. XP will simply rebuild it in time... I've read many posts about how it is good practice to clean out all the old prefetch stuff periodically.

Take care everyone...

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July 14, 2005 at 17:10:35

Go here for x-setup pro. Free. you can disable prefetch in the program. It is not needed and by some reports should be disabled. Hi Tommyo.

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July 14, 2005 at 17:13:53

Also here.

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July 14, 2005 at 18:48:00

Hi per! Nice to see you're back, my friend...
Just saw your reply now; been a hectic day today and was tied up all day buying a new car (my ole' Oldsmobile went to "Cutlass Heaven" for an extended rest..)
Take care everyone..


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