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

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NTFS Defragmentation - Is my DEFRAG tool really working?

I am running a quick test using three DEFRAG tools (Windows' DEFRAG, Defraggler and MyDefrag). Each product returns a different initial analysis result on the same drive (same state). The variance ...
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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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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 ...
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Win 8.1: Defrag Optimize Issue: Do you want to restore default optimization settings?

Optimize Drives Do you want to restore default optimization settings? Storage optimization is currently using customized settings created by another program. Before you can modify the ...
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1answer
36 views

Low disk space for shrinking even after defragmentation

To install ubuntu in my windows laptop, I need to shrink my disk space into two sections, windows C drive and unspecified space. However, given my 350Gb empty space out of 650Gb in C drive, available ...
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36 views

Files corrupted after Defragmentation

This is my first post in this forum. The Problem: Today, I decided to defragment and optimise my 2TB external Hard Disk using Auslogics Defragmenter. Now, a little background here. The partition ...
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network lag issues on multiplayer games

I need help with a networking issue. About 80% of my games are unplayable multiplayer due to lag. One particular game I play (Rocket League on PS4) I get the red network disconnect triangle, even ...
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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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Defragsvc service causes high cpu load whe notebook is idle on Windows 8

When notebook is idle, defragsvc service starts to doing some weird things and causes high cpu load. This is not regular defragmentation job, since all disks (both ssd and hdd) are not fragmented. I ...
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How to clean up/optimize/defrag $Extend\RmMetadata\$Txf files?

After analyzing my HDD, I see so many small files with no extensions. Their paths are mostly C:\$Extend\$RmMetadata\$Txf.. File names start with 000000000[xxxx] Is there a way to defrag all of them ...
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Can you defrag an encrypted file system

I just encrypted my entire hard drive with truecrypt and was wondering can I still defrag it? Or will that not work anymore or break something.
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Defrag C: /b really works to Windows boot optimization?

The command Defrag %SystemDrive% /b really works to optimize Windows boot time? (The defrag /b option is not documented by Microsoft). I am trying to use it in an attempt to optimize the files on the ...
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How to prepare SSD drives for shrinking partitions in Windows?

I was trying to shrink a partition (Windows 10). For traditional hard drives, I can use the Optimize Tool to defragment the hard drive to free up disk sectors towards the end of the HD and shrink the ...
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Reallocation Event Count high threshold

I've bought recently a WD black, and I've made a SMART check on it, these are the values : http://prntscr.com/3t6szr The rellocation event count worries me. The HDD works pretty neat tho. Installed ...
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654 views

Where on the disk is the NTFS reserved area?

By default on a freshly installed system with plenty of free space on a disk, where are the NTFS reserved area located on the disk? What percentage of the way through the disk is it located at? ...
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54 views

Reserving space for files or set where on the HDD a file should be placed

To reduce fragmentation, I'd like to either reserve space for files or manually state where files should be stored on the HDD so the files can grow without fragmentation. This is useful for my mail ...
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How to defrag a folder to make sequential file access faster

I work with real-time video apps, and just defragged my (Win XP) system to try to improve the general performance. It did... but it appears to have destroyed the generally contiguous nature of certain ...
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more problems post malware scan and defrag than before

ok so, the little hiccups my PC has been having have turned into a full on dry heave. the issues i used to have were as follows: I have windows 7 and for some reason it keeps telling me to shut down ...
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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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Is it safe to defragment platter-based USB hard drives?

Occasionally defragmenting internal IDE/EIDE/ATA/SATA/SATA2/SATA3/etc platter-based hard drives is often a recommended practice. What about external USB/USB2/USB3 platter-based hard drives? Is it a ...
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How often should I defragment drives?

You can schedule Disk Defragmenter on Windows 7 to defragment disks daily. When it is useful?
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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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How many passes does Defrag take in Windows 10?

How many passes does Defrag.exe take in Windows 10? New laptop, and I started a while ago and it's now up to Pass 14
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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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Does cloning duplicate data fragments?

If I have a fragmented hard drive, will duplicating the drive recreate the data fragments? Or does the duplication process clean those up? Does it depend on the duplication tool?
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Defrag: Does it really improve performance? Could physical file location be equally detrimental? [duplicate]

Over time, windows just runs slower. Fragmented files are often to blame, but time after time I feel like I see evidence that defragmenting the files doesn't help. I've been running defrag on each ...
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Performance benefit of defragging laptop hard drives [duplicate]

It seems like defragging is becoming much less important now that hard drives are faster and SSD and becoming popular. I'm curious: what kind of performance improvement does defragging have on laptop ...
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How does Windows calculate the fragmentation percentage?

When running defrag -a -v C: on Windows 2008 R2, I got the following output: Windows Disk Defragmenter Copyright (c) 2006 Microsoft Corp. Analysis report for volume C: Volume size ...
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Is it safe to defrag a virtual machine on an SSD?

As part of my coursework I need to show some evidence (screen shot) of myself defragmenting a computer. Since I missed out doing it at college, I need to do it at home. This requires me to use a ...
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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 is it bad to defragment an SSD? [duplicate]

I heard on the internet that defragmenting an SSD is quite harmful. I was wondering if it is true, and if so, why? I've already done it a few times and it didn't seems to be broken at all.
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Will fragmentation of a virtual machine's disk also cause host OS disk fragmentation?

I run a number of virtual machines using VMWare Player on top of host Windows 7 OS. Let's say I am using the VMs for everything from web browsing to actual work, file transfer, etc. for a long period. ...
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704 views

Windows 10 “optimize drives” shows SSD as “hard disk drive”

I upgraded my old computer with a Samsung EVO 850. I did a clean Windows 10 installation. Installed Samsung Magic and fixed all the AHCI settings. Now I have full 6Gb/s transfer speed. However, my ...
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Do I still need to defrag my hard drive?

I've looked around and found multiple answers around the web on this. I turned off auto defrag on my Windows 7 machine because some people have told me it creates more wear and tear on the disk (using ...
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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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Strange hard disk information after defrag

I just finished a defrag on one of my drives and I am now getting some bizarre info with regards the available space. I had half written this post titled "Why has defragging used all my disk space" ...
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Cannot defragment hard disk, error in CSC1.tmp

My computer is running absolutely fine, but when I run the disk fragmentation tool (right-click C:\, then Properies > Tools), the progressbar gets nearly to the end and then pops up an error in the ...
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Impossible to defragment and resize a partition

I'm trying to shrink the main partition on my new PC with Windows 7 64-bit preloaded from 500 GB to 100 GB. Unfortunately, some files prevent any attempt to go below 290 GB. I have already ...
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What Windows app can I use to defragment a FAT32 drive's directories at boot time?

What (Windows app) can I use to defragment FAT32 directories? I used to be a fan of PerfectDisk, but they've disabled the feature in their latest versions, and I have drives that I need to use both ...
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how to fully consolidate freespace on a defragmented HD

My scenario: my hdd is fully defragmented and must be kept defragmented free space must be fully defragmented (no small gaps) so when copying new files with iso2opl they aren't fragmented I think ...
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Special defrag options to place boot files in special order (for fastest boot)?

How can I defrag an HDD of a Windows OS in such a manner that the boot files which Windows loads are placed sequentially each one after another to get the fastest boot time? (incl. drivers etc) Which ...
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Defrag & Pre Optimize OS & Data Partition when cloning from SSD to HDD?

There are times I have had to clone an OS or Data partition from an SSD to a HDD. It results in major performance losses, obviously until I can sit and Defrag/ Optimize / Boot Optimize the ...
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Swapfile.sys cannot be disabled on Windows 10 [confirmed bug]

I want to delete the swapfile.sys from my C: partition because it prevents me from shrinking the drive. I set the Paging File option to 'No paging file' in the 'Virtual memory' window for my C ...
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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 ...
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4answers
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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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Is this a bug in Auslogics defragmenter?

When Auslogics defragmenter is done it shows a link to see a report: However, when I click the link the file explorer becomes active in the Firefox installation directory, with firefox.exe selected,...
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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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How do I Defrag/Optimize a Windows 8.1 Volume which has no Drive Letter? Does it matter?

I have a Dell Inspiron Ultrabook running Windows 8.1 (64-bit). In File Explorer, I click on Drive C Properties -> Tools -> Optimize. There I see 4 drives listed as follows: OS (C:) -- OK (0% ...
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Disk defragging with unmovable files

I moved my hard disk from my laptop to my desktop in order to defrag it. I am using MyDefrag to defrag the disk. I was hoping that since the OS used was my desktop's and not my laptop's, the system ...
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Hard disk drive's full capacity is not recognized

I have a HDD (wdc wd30ezrx-00mmmb0 western digital 3gb, Link to HDD specifications) I purchased a while back and it had an original capacity of 3TB. Some unknown error happened to my computer which ...