Regarding the mechanics of disk defragment.

By thodsakan ·

Actually, I'm one of them freeware enthusiasts and am using Auslogics right now. As we all know that disk defragmenting repairs the fragmented file cluster but...

I was jogging my memory about some old-school defragmenting method that involves rearranging all the clusters to the (warning: jargon confusion ahead)"head" of the HDD, therefore clearly separating the occupied zone and free space.

I wonder if there is any defragmenting software that does exactly just that (preferrably freeware).

As I went from 100MB short of full HDD to half-full HDD, even though defragmenting dod repair all the fragments, but the clusters are all over the place! I'm guessing this should do good(maybe in nanoseconds measure) to the access of both my files and allocated space for virtual memory.

P.S. I searched the internet for the answer beforehand, to no avail, I apologize if there are already obvious answers to this question that I must've overlooked.

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Don't know about Auslogics and never heard of it!

by ComputerCookie In reply to Regarding the mechanics o ...

Most tools are pretty reliable, download another degragment tool and it will probably give you different results.

Not sure how come you've think, that by defragging your hard disk.

Defragging will only attempt to reorganize your files, any minor amount of freespace created would only relate to size on disk adjustments.

Most files are usually sorted so as that files that are never or rarely used are at the end of the drive. So I'm not sure what you're try to do as moving all files towards the start of the drive will only create a big defrag once you save data or install new software!

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If you are using XP

by Jacky Howe In reply to Regarding the mechanics o ...

Windows 2000 and Windows XP have simplified versions of a professional defragmentation software known as Diskeeper.

Over time, areas on your disk can become corrupt. Microsoft also has a tool to check for any errors and correct them. Click Start, Run. Now type in chkdsk /r c: and click OK. A black screen will appear asking you whether you want the check to occur the next time your computer starts. Press y. Then restart your computer.

1) Click Start, Programs, Accessories, System Tools, Disk Cleanup
2) Choose the correct drive usually C
3) Check the boxes in the list and delete the files

Open Internet Explorer and select Tools, Internet Options and on the General Page you can delete a lot of temp files.

If you run these simple maintance tasks before you Defrag you should keep your PC in reasonable shape.

Edit: A couple of other areas to look at.


Run it and see how defragmented it is. Let it run on next boot.


The program works by recreating each registry hive "from scratch",
thus removing any slack space that may be left from previously
modified or deleted keys.

Note that the program does NOT change the contents of the registry in
any way, nor does it physically defrag the registry files on the drive
(as the PageDefrag program from SysInternals does). The optimization
done by NTREGOPT is simply compacting the registry hives to the
minimum size possible.

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About Auslogics and follow-up to the answers

by thodsakan In reply to Regarding the mechanics o ...

Actually, Auslogics is one of the highhest-rated defragment freeware. I first heard about this in Chip(German) magazine which lists the defragment sofwares good for replacing windows' default. Not to mention that this program also defrag the registry to some extent, but to have the registry in a perfect state, Auslogics also offers a Registry defragment tool, also.

The other competent commercial software are O&O, which boasts to incorporate 10 different methods to defragment the HDD and Perfectdisk.

Chkdsk is also what I regularly do. But still, I'm looking for a non-microsoft program that actually, yes, "collapse" the files to the start of the HDD and leave the end (save allocated space and rarely used files) empty, like how files are written into fresh and new HDDs.

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Still not sure what you hope to achieve,

by ComputerCookie In reply to About Auslogics and follo ...

if you install XP and don't defrag it at least 3 times before you get any updates your starting with a fragmented disk anyway.

You then need to defrag after every software installation.

Then run disk cleanup and defrag before you save any new documents or install/uninstall any new software/hardware because if you don't most defrag software will not be able to competely defrag.

I've used diskeeper very good but not cheap, but how are you going to get a "clean" area to save your new data, have you any idea how OS's are installed and the only tools that I know that will "clean" that area will also wipe the entire drive.

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I agree - just installing causes fragmentation ...

by OldER Mycroft In reply to Still not sure what you h ...

As regards the 'mechanics of fragmentation' the write head drops data wherever it can find a free space.

THAT is the main cause of fragmentation - writing to disk.

What this Poster hopes to achieve is basically a pipe dream. A bit like painting the Forth Rail Bridge: once you've finished you have to start again. :)

> Although, as regards the bridge, apparently they've started using North Sea Oil Rig paint that'll last twenty years (painting the bridge only takes TWO years).

<Edited for update>

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