Windows Legacy OS forum

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Slow! defragmenting

by rhodeye / March 1, 2007 3:56 AM PST

Last time I defragmented my c-drive it took about an hour.Today I tried it and it took about 20 min. to be only 10% complete. I recently installed AVG free anti-virus. Do you think this could be the problem or what other reason could there be for it?

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Seems normal.
by R. Proffitt Forum moderator / March 1, 2007 4:06 AM PST
In reply to: Slow! defragmenting

Depending on how much needs to move the time varies from minutes to hours.

Not a bug.


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Just a test.
by Bob__B / March 1, 2007 4:41 AM PST
In reply to: Slow! defragmenting

I'm in a habit of running a pass of scandisk before I run defrag.

Start defrag and click on settings.
Untick>rearrange prog files so progs start faster.
Let defrag run.

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why click off rearrange prgms.?
by rhodeye / March 2, 2007 1:49 AM PST
In reply to: Just a test.

Why in settings should I unclick-- Rearrange prgms. so prgms. start faster. Don't people want the prgms. rearranged that way? After defragmenting should the box be checked again? Anyway I didn't do anything but let the defragmenter run all night. I turned it on at midnight when I went to bed and when I got up at 5 AM it was 92% done so I had to wait another 15 minutes or so till it finished. Maybe next time it won't take so long and I'll try what Kees Bakker suggested if it still is that slow. Thanks

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My take.
by Bob__B / March 2, 2007 5:49 AM PST

It's a legacy thing.
Many years ago HD's were very slow.
The OS answer was to move the most used progs to the front of the HD.
Less access time.

This is were taskmon and applog come into play.
Taskmon builds applog.
Defrag uses applog to determine which progs to move to the front of the HD.

With today's fast HD's it questionable about the value of doing this.

I can tell you this.
Moving all the most used progs to the front of the HD might make defrag run for a very long time.

I have not used that feature in years...defrag runs perf issues.

Anyway it's just a test....if you don't like it retick the option.

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Re: defrag
by Kees Bakker / March 1, 2007 7:59 PM PST
In reply to: Slow! defragmenting

The 10% is where defrag has its detailed plans ready. Only then it starts moving files around for defragging. I'd retry in Safe Mode, or after stopping AVG.

During the first 10% it also optimizes locations of program files, as told in That might take some time for a new program, but only the first time or the first few times. You can't influence that process, except by turning off taskmon.exe (in msconfig?) and deleting all files in c:\windows\applog.

Hope this helps.


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