Defragmentation is the process that reduces the amount of fragmentation on a hard disk drive.

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What does “Optimize Drives” do in Windows 8?

With Windows 8, there is an option to "optimize" a drive. This looks similar to the Defragment option of previous versions of Windows: I have an SSD and I know that SSDs shouldn't be ...
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3answers
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Should I defrag an SSD drive? [duplicate]

Can I run Windows' defrag on an SSD drive ? Well I believe the short answer is yes, I've heard that SSD drives require special and specific tailored defrag programs. Is it true and, if so, where ...
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Why can't you defragment Solid State Drives?

I keep hearing that this is a huge no-no. Why is this? I run Ubuntu mostly so it doesn't affect me, but I was just wondering.
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Why did defragmenting C drive increase my free disk space by 10 GB?

I used Defraggler to defragment free space on my 100 GB C:\ drive which was 85 GB full. After defragmentation, the drive showed only 75 GB full. How did 10 GB  of free space ...
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Do SSDs get fragmented, and if they do, is that an issue?

Do solid state drives get fragmented? And if they do, does it cause their performance to suffer?
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Do I need to run defrag on an SSD? [duplicate]

Possible Duplicate: Do SSDs suffer from fragmentation? Is there an advantage to it? I mean, SSD is essentially random access memory.
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7answers
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Is defragging relevant to improving disk performance anymore?

Does it stil make much difference, now that we have much faster and larger HDDs? Generally I find if disk performance is getting too slow, it's probably because of too little free space, and the ...
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Why do disks fragment?

As a part of regular Windows maintenance, I defragment my hard drive. But why does the hard drive fragment on NTFS and FAT* systems? Apparantly ext* does not, why is this? Should I also be ...
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1answer
509 views

SSD: “The volume is too fragmented to complete this operation”

I am currently configuring a Thinkpad E540, having inserted a 256 GB M.2 SSD into the corresponding slot, in order to run Windows 8 from the SSD instead of using the preconfigured 16 GB SSD as a cache ...
13
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How do you defragment the MFT on an NTFS disk?

A while ago, I nearly filled my hard drive, much more than the recommended maximum of 85% of capacity. I believe that NTFS started storing files in the space reserved for the Master File Table (MFT) ...
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Do ext4 filesystems need to be defragmented?

Do ext4 filesystems need to be defragmented? If so, how do I defragment them? If not, could you post a simple explanation of why they do not need to be defragmented?
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Does Defragmenting really help? [duplicate]

Possible Duplicate: Is defragging relevant to improving disk performance anymore? It used to be that defragmenting a hard drive gave a significant boost to performance. In the DOS days I ...
13
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In linux, how do you check if a disk is fragmented?

At boot, fsck sometimes reports the frgmentation for a disk: "5.3% non-contiguous". How can I get this information myself? Is there a specific fsck invocation?
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8answers
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What does a defrag actually do?

What does a defrag do really? Does it put the files that execute in sequence closer together?
11
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7answers
1k views

Looking for an alternative to the Windows defrag utility [closed]

Under Windows XP, what are some alternatives to the default disk defragmenter?
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Should I defrag the hard drive running on a Virtual Machine?

I know that there is no point (in fact it is a bad idea) to run Defrag on an SSD. What about a virtual machine running on an SSD, should I defrag it's hard drive since it is basically accessing the ...
11
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3answers
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How do defragmenting programs work?

a) What algorithm would a typical defragmenting program use to get rid of the fragmentation? b) In Defraggler, I have a quick defrag option and a defrag option. Assuming defrag would do a normal ...
11
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2answers
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Windows 8 Defragmenter?

It seems like Windows 8's defrag command has some new options, including: /K Perform slab consolidation on the specified volumes. Does anyone know what this means in English?
10
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1answer
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Does downloading/copying files simultaneously promote fragmentation?

Does writing more than one file simultaneously to a hard drive partition promote fragmentation? Would these files be written interlaced on the hard drive? Examples: Downloading several files ...
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Is it bad to defragment a USB Flash Drive?

If I defragment my 8 GB Kingston flash drive, will it decrease its lifetime?
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Do I need to defragment Mac OS X?

Does windows need to be defragmented regularly? Why does MacOS not have a Defragmentation utility? Please teach a detailed person
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2answers
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What block allocation algorithm does NTFS use?

On Windows XP 64, I downloaded a 1.2 GB file and it ended as fragmented as the image shows. Unfortunately, before taking the snapshot from Piriform Defraggler I defragmented the other files, so you ...
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3answers
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Do I need to manually defrag a Windows 7 PC?

Given that Windows 7 will auto defrag a PC when it's idle, does that mean manually defragging a PC is a thing of the past?
8
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5answers
3k views

How can I tell if one defrag utility is better than another? [closed]

There's a lot of free defrag utilities (such as Smart Defrag, Auslogics Disk Defrag, JKDefrag, Defraggler, and there's alot more) But are they actually any better than the built in Windows one? And ...
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Windows XP scheduled tasks and defragmenting?

I am trying to set a seduled task to defrag my HDD on a regular basis and following the guide on http://www.microsoft.com/windowsxp/using/setup/learnmore/tips/gehrke1.mspx. It does not work. That ...
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5answers
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Why does Windows Defragmenter do nearly nothing on a disk with 23% empty space?

While trying to defragment a 80 GB NTFS (4 KB cluster size) volume on Windows XP, I encountered a strange problem: the defragmentation process is very quick, but also very useless. Graphically, I ...
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6answers
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Can Windows Defrag while Laptop is Closed?

Can I run a Defrag and close the laptop lid? Or will my computer not defrag when it is in sleep mode? If not, can I turn of the monitor of my laptop when it's not in sleep mode, like, 0 brightness?
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Is there any way to defrag a bootable XP hdd so all the free space is at the end of the drive?

I have an old PC booting Windows XP from a 40Gb drive. It also has a 320Gb hdd and a CD r/w. The 40Gb drive is getting quite noisy, and I'd like to swap it for a quieter 12Gb drive I have lying ...
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How to measure performance gain with defragmentation?

I believe I understand the basic concepts of fragmentation of data on hard-drives, and the concept of defragmentation to counter the effects of this. What I don't really understand is how one actually ...
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5answers
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Does Windows 7 actually defragment an SSD drive if you tell it to?

Defragmenting an SSD drive is a bad idea and Windows 7 is (should be?) smart enough not to schedule defragmentation on such drives. However, I've opened up Disk Defragmenter on my system and found, ...
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Does a fixed size Virtual Machine file (vmdk, etc..) become fragemented?

Just sort of remembered something from OS class about fragmentation and was wondering if anyone knows for sure whether a VM file is liable to become fragmented if you tell it what size the hard drive ...
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1answer
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Disk fragmentation on Linux

Do I have to de-fragment my ext3 and FAT32 filesystems on Linux? And if yes how?
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Is it possible to defrag the hard disk without admin rights?

Is it possible to defrag the hard disk without admin rights? I'm using Windows XP.
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Why is disk fragmentation measured as a percentage?

In Windows if I open up the Disk Defragmenter and analyse a disk the tool reports the disk fragmentation as a percentage: What does this percentage mean? Obviously if a drive is 0% fragmented then ...
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Does anyone know if it's 'normal' that you can't defrag an Outlook .ost file?

I've tried defragmenting my hard disk to see if Outlook performance improves. The .ost file shows 1000+ fragments but even after a post-defragmentation restart - never launching Outlook - it still ...
5
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1answer
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Is it safe to edit files during the defragmentation process?

Assuming I'm on an NTFS partition, is it just as safe to edit files during defragmentation as when not? Is there any added risk, even if very small? If not, how does the operating system ensure the ...
5
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what's the rate of return of defragmenting our hard disk?

I know some people who swore by Disk Defragmenting. But basically I was wondering if the result (a more responsive computer) is worth the effort (running defragmenter - in a 2GB ram environment that ...
5
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1answer
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Windows 8 will not defrag or analyze system hard drive

I recently bought a new laptop that runs windows 8. It has been about a month and I wanted to clean the system up a bit to keep it running smooth. I tried to defrag the system hard disk drive but when ...
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Defragment before Windows reinstall?

I'm going to reinstall Windows XP on a used machine soon. The data on the hard drive is heavily fragmented at the moment. I'm going to format the drive when reinstalling Windows so is there any sense ...
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5answers
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What's the fastest application for defragmenting NTFS?

For daily/weekly use, so not copying whole disk/partition to disk/partition. What's the fastest way in Windows to defragment NTFS? Edited to add: This is on a 2 Tb hard drive, used for storage only, ...
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Gracefully kill defrag.exe when run in command prompt

When I run defrag in command prompt is there any way to gracefully stop the process before it finishes? Does killing the task in TM cause any problems if it is in the middle of moving a file? ...
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Fault with disk de-fragmentation on Windows 7 using various tools

I've recently been trialling various defragmentation tools, specifically: My Defrag Ultimate Defrag Ultra Defrag The problem is that I have noticed the same issue with all three of them; that the ...
4
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When is the data in the journal written to the disk?

(1) mentions that "With a journal the file is first written to the journal, punch-in, and then the journal writes the file to disk when ready. Once it has successfully written to the disk, it is ...
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Cleaning and housekeeping Linux computer hard disk

I started using Linux recently. On windows (which I've used all my life) to keep the HD tidy there are several tools, e.g. disk cleanup and defragger. On Linux what should I do to tidy up a hard disk. ...
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Does Windows 8.1 prevent defragmentation from a SSD even in the event of running by mistake defrag on command prompt?

Hope you can me with this. I am concerned about a possible defragmentation on my SSD. I have a laptop running Windows 8.1 preinstalled and further equipped with a SSD. Windows 8.1 has detected the ...
4
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4answers
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Can't shrink a data partition on a Windows 8 computer

My computer is running Windows 8 X64 Enterprise. I have two partitions, C (System) and D (Data). Both are bitlocked. I would like to shrink my D partition (in order to create a new one). Using the ...
4
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1answer
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In a multi-boot setup, does defragmenting from one OS affect the whole drive, or only its partition?

In other words, does defragmentation have to be done on each OS separately?
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Avoiding extreme fragmentation of compressed system images on NTFS

Problem explanation I'm storing windows disk images created with wbadmin on NTFS drive, and I found compressing then with NTFS compression gives 1.5-2× space conservation, still giving full ...
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Auto defragmentation of SSD

I added a SSD to a 2003 server. I heard there is some kind of auto defrag in windows which is disabled for SSDs from windows 7 only. Is there a way to disable the auto defrag in Windows 2003 Server? ...
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Windows 8 wrongly detects my Raid1 HDD as Solid state disk

I have upgraded my machine from Windows 7 to Windows 8 and then Windows 8.1 (this is the only available upgrade path to keep my files, settings AND applications). My system is setup as follows: 2 x ...