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

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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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269 views

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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1answer
73 views

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 ...
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38 views

Bluescreen at win7 Boot (Boot time defrag routine failure)

I had this drive set up for boot time defrag (only once). It contained a pagefile which was fragmented. Next time I restarted my PC, I got a bluescreen (dumping memory). After a few repair ...
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33 views

How to disable auto-update in Auslogics Disk Defrag?

How can I disable Auslogic Disk Defrag's auto-update functionality? My task bar is at the top of the screen and it keeps popping up to cover my system tray.
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25 views

How do I efficiently redistribute massive amounts of data spread across multiple drives with almost no space on them?

My problem is simple but severe. I have a huge amount of data (many files in many folders) on multiple drives (4 external HDD). Each drive is at least 1TB in size and the overall size of this "pool" ...
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3answers
47 views

What is the location of Defrag.exe on the Windows 7 DVD?

I can't find defrag.exe on the Windows 7 DVD in its default location, which is supposedly here: C:\Windows\System32 Knowing that you can defragment using the GUI tools from the DVD (which I don't ...
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1answer
199 views

Defragmenting using Defraggler made the fragmentation worse and increases “used space”

I decided to do a full defragmentation of my C: drive for the first time this day. The defragmenter I use is Defraggler by Piriform. When I analyzed the drive, it detected 13% fragmentation. After ...
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1answer
107 views

How long does defragging using Piriform Defraggler take? [closed]

I heard that defragging can make the computer faster. I downloaded Piriform Defraggler as they say that it's a better option than Windows' built-in defragging tool. I ran an analysis using Defraggler ...
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40 views

Windows NTFS partition disappeared from Disk Defragmenter

I've recently installed modded windows 8.1 version (it has some of the redundant features uninstalled to make it lighter and faster: Polish forum link (they are good!) It is running perfectly smooth ...
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1answer
41 views

VirtualBox and non-system disk fragmented to 41%?

I've installed VirtualBox reccently and have been playing around with installing different systems and working with them. I've created five different virutal machines: Windows 10 Technical Preview ...
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1answer
556 views

How To Defrag Windows 8 System Reserved Partition

Today I was cleaning up my computer and stuff and when I was defraging my partitions I saw that the System Reserved partition is 100% fragmented. So I tried to defrag it, but it doesn't seems to ...
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1answer
126 views

How to switch from SSD to HD in Windows 8.1?

I'm on the verge of giving up on this. I thought I would pose the question since I haven't found any answers and some other poor soul might run into a similar challenge. How do you configure Windows ...
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0answers
60 views

Windows 8.1 dfrgui not seeing drive C or not starting at all

I've made a clean re-install of Windows 8.1 x64 today. I decided to check the disk defragmentation schedule. To my surprise, dfrgui.exe did not list drive C:, showing only my external hard drive ...
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1answer
165 views

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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1answer
22 views

When overwriting a file, how does this effect the filesystem NTFS?

Say a I have a secondary hard drive that has been defragged and optimized so that the data is a nice neat continuous block with no missing spaces/clusters. Like a solid brick wall. If I copy a file ...
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1answer
68 views

Why is my newly rebuild disk already horribly fragmented?

I just rebuilt my disk from scratch (windows 7, ntfs). Each file has been written exactly once, and essentially nothing has ever been deleted or rewritten. The disk is only 20% full. My prediction ...
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2answers
135 views

Compact files into contiguous area on disk [closed]

Consider the following case: a disk has two very large files stored one after the other - the first being slightly smaller than the second. As far as I know (and please correct me if I'm wrong) - If I ...
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1answer
79 views

Windows 8.1 thinks my partitions are SSDs

I just removed an SSD from a PC so that I could put it into my "new-used" laptop. With the SSD, I had simply cloned my System and Windows partitions to partitions onto the HDD as a backup/recovery ...
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2answers
59 views

Does resizing partitions cause damage?

I plan on resizing already-separated partitions. Let's say that there is partition A and partition B on drive C:. All of drive C: is NTFS, and drive C: is, in total, 1 TB. Partition A has 400 GB, and ...
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4answers
415 views

How do I defragment Windows paging file

Any suggestions how can I make pagefile.sys contiguous and move it to the beginning of the disk? Much appreciated. Update: I use Windows 7 64-bit edition.
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131 views

“Access is denied” to Admin when using Sysinternals Contig to defrag the $LogFile metadata file

I have folders with hundreds of thousands, to over a million files and subfolders in each parent. I'm reading that the NTFS log file may be responsible for slow file creation and other actions. How ...
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1answer
558 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 ...
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2answers
392 views

Tune up utilities drive defrag ate my disk space [duplicate]

Today I used Tune up drive defrag and after using it my free disk space decreased by 9 GB. Why did this happen. What can I do to recover the disk space? Thank you. I just found out that this is using ...
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84 views

Partitioning issues with an SSD drive

I have a Solid State Drive with 24 GB of free space. I want to shrink the volume by 20 GB to create a partition to install and dual-boot Linux Ubuntu OS. The problem is Windows disk management tool ...
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2answers
529 views

High response times in HDD. MFT, fragmentation or even halted disk?

I am experiencing really high response times im my HDD, which can go around 13000ms (from Win8 Task Manager). This occurs when starting up windows and for at least 3-4 minutes, also when doing ...
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244 views

PowerShell Remote Defrag

I have the following code that works fine on my Windows 7 computer: $Defrag = Get-WmiObject Win32_Volume -Filter "DriveLetter='c:'" -ComputerName "SRLVHOMAPP01" | Invoke-WmiMethod -Name Defrag But ...
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40 views

Maximum sequential speed for folder, defragment

How can I move folder at the beginning of the drive (partition) to achieve maximum sequential read speed in Windows? Can you recommend defragmentation tool that can do this ?
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1answer
69 views

When I copied photos from my camera to my desktop, they have fragmented equally throughout the remainder of my hard drive. Why?

A couple of days ago I copied 200 or so CR2 photos from my DSLR Canon EOS 1000D to a folder on my Desktop. Today when I opened up my defrag program it shows that 1 or 2 images has been scattered in ...
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2answers
590 views

How to defrag Virtual Box HDD files?

I am using Virtual Box on Windows 7 Machine. I have created several virtual machines of Ubuntu Servers on it. I store my all virtual hard drives on a dedicated NTFS partition. This partitions has ...
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2answers
99 views

What is the “System” disk that shows up in Disk Defragmenter?

When I run the "Disk Defragmenter" program that is included with Windows, two different "drives" show up. The first is, as expected, my C: drive. The second just shows up as System: What is this ...
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1answer
40 views

Windows 8(.1) additional utilities

I'll be brief: I've formatted my computer and now I'm trying to install as little software as possible. I was wondering if CCleaner and Defraggler are really necessary? Is cleaning the registry ...
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1answer
348 views

Trying to defrag computer on Windows 8 but possible virus wont let me open program

After trying to open Defrag through command prompt I receive this message The storage optimizer cannot start because you have insufficient privileges to perform this operation. <0x89000024> Help ...
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1answer
550 views

Unable to defragment win7 laptop

I have a Windows 7 laptop that I have been unable to defragment for the last several months. When I try to invoke the defragmenter from the command line it says "The dirty bit is set on this volume". ...
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1answer
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When will Fragmentation appear such that a Fragment is at an lower address as the Basefragment?

By Basefragment I mean the first fragment of a file -- containing the header etc. Lets say I have a file which is fragmented into 3 fragments (1, 2, 3). 1 has the lowest address. I think most file ...
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3answers
205 views

How do I go about increasing defrag speed?

I'm running a defrag on a friend's laptop which is horribly fragmented and it is taking an age. Would killing any unnecessary running processes increase the speed of the defrag or is the bottleneck ...
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476 views

What is this mystery volume in Windows 8.1?

What is this mysterious volume listed in Optimize Drives list in Windows 8.1? I only have one hard disk, drive C:.
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1answer
80 views

Computer is very slow to open folder [closed]

How to fix my computer to make it very fast to access all folders? After defragmentation, my computer became very slow to open a folder. Before defragmentation, it could access the files from a ...
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1answer
2k views

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 ...
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256 views

Disk fragmentation. Is it suppose to take up more space?

I decided to defrag my laptop for the first time after having my laptop for 1,5 years. I found this program piriform defraggler to use. it says my HDD is 13% fragmented, I clicked defrag and it says ...
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1answer
321 views

defrag command line in Windows 7

I'm trying to consolidate my system partition volume by running defrag in a command prompt in command line recovery mode. This is the command I'm trying to have executed: defrag C: /X /H /U After I ...
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2answers
1k views

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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70 views

Defragmentation - stuck at high percent, SQL and big file drives

I have a question regarding fragmentation - I am maintaining a couple of SQL and file servers. All of them store their data on D:\ (for SQL server it makes D:\ drive be actually about 10 files, all ...
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0answers
30 views

Windows will not open processes

I recently I come upon an unexplainable issue concerning my Windows 7 partition. When I woke up Thursday morning and logged into Windows, I discovered that it was acting really slow. It didn't take ...
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1answer
95 views

OS partition has 512 bytes clusters, should I convert to 4k?

I made a mistake and formatted the OS partition with 512 bytes cluster size, thinking that this will save a lot of space when storing small files (That was a long time ago, I didn't know that it will ...
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0answers
83 views

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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1answer
54 views

Can a USB be removed with out un-mounting during de-fragmentation

I have a USB flash drive formatted to fat32 and I have a batch file to defragment it. Would there be any damage done to the flash drive or it's files if I was to unplug it from the USB port while it ...
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1answer
163 views

Best way to defragment hard drive? [closed]

I'm trying to understand how defragmenting works so I can write my own program to do it. I was considering have it iterate through the files on the hard drive and defragment them each seperately. ...
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57 views

Boot defrag before or after full defragmentation

As part of regular housekeeping I often run defraggler. I also run a boot time defrag. Is there any difference what order these should be run. I usually run boot-defrag first as I feel the normal ...
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2answers
5k views

How often should I defragment drives?

You can schedule Disk Defragmenter on Windows 7 to defragment disks daily. When it is useful?