a white space in defragged drive

[k_mohsen]

Hello

When HDD drive like D, E, F, and so on (and not C as root drive) defragged whit "Disk defragmenter", a white space appear in the middle of drive. Both side of this space are used and are blue.

What this mean?
Why this space not filled?

Thanks

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[patio]

Swapfile...don't worry about it.

[k_mohsen]

this white space is not swap-file. it's free space.
swap-file is green and by default located in root drive (C:).

but this space does not filled by files (blue section)
why?

[Computer_Commando]

this white space is not swap-file. it's free space.
swap-file is green and by default located in root drive (C:).

but this space does not filled by files (blue section)
why?

It was, and now it's not.  Windows fragments the instant you exit Defrag.  It could also be space marked as "bad" or unusable.
Try this one:  http://www.piriform.com/defraggler

[Allan]

So it's free space. Unless your defrag utility has an option to consolidate free space there's nothing you can do - nor is it important.

[soybean]

I haven't used the standard Disk defragmenter in Win XP for quite a long time but doesn't it have a color code guide at the bottom of the Disk defragmenter panel whch tells you what the colors represent? 

[patio]

this white space is not swap-file. it's free space.
swap-file is green and by default located in root drive (C

And how do you know this ? ?
Different apps may show it differently...

[rthompson80819]

Try defraggler as Computer_Commando recommended. It gives you more information than the standard Windows defrag.

[JJ 3000]

NTFS partitions use a file allocation table called the Master File Table. An NTFS partition keeps a backup copy of the most critical parts of the MFT in the middle of the disk. This reduces the chance that a serious drive error can wipe out both the MFT and the backup copy. That small, unmovable chunk in that you see is the backup MFT.

[k_mohsen]

NTFS partitions use a file allocation table called the Master File Table. An NTFS partition keeps a backup copy of the most critical parts of the MFT in the middle of the disk. This reduces the chance that a serious drive error can wipe out both the MFT and the backup copy. That small, unmovable chunk in that you see is the backup MFT.

Great answer    , thanks JJ3000
can you tell more about why: "middle of the disk" is more secure?

[BC_Programmer]

The white space is not $MFTMIRR (the MFT backup). otherwise it would show up in the unmovable color (not true, actually it doesn't show up at all). Last time I checked NTFS didn't mark it's data structures as free space anyway. That would be pretty stupid.

As Allan stated, unless you have an option like "consolidate free space" selected, the defragmenter is not going to consolidate free space. Therefore you will likely have bits of free space that don't move.

[JJ 3000]

Yeah, he's right. Green = unmovable. White = free space. I don't know what I was thinking. It's been a while since I've used the defragmenter.

Thanks BC

[k_mohsen]

...Therefore you will likely have bits of free space that don't move.

maybe this free space, reserved for windows defragmenter's task.
but you can see this free (or white ) space in other free drive.

if you search "Diskeeper" or "Defragmenter"  in google image, you can see this space be in second cylinder in HDD.

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[Allan]

maybe this free space, reserved for windows defragmenter's task.
but you can see this free (or white ) space in other free drive.

Huh?

[BC_Programmer]

maybe this free space, reserved for windows defragmenter's task.
but you can see this free (or white ) space in other free drive.

if you search "Diskeeper" or "Defragmenter"  in google image, you can see this space be in second cylinder in HDD.

OK, if you're using a optimizing type of defragmenter then that would be by design.