The following article explains how to repair defragment in Windows Vista. It will also mention alternatives in case the repair does not succeed. The following error messages are symptomatic: “The Disk Defragmenter is not installed on your computer” or “Windows cannot connect to the Disk Defragmenter engine”. The suggest help topics do not help in this case.

The first thing that can be done is to register two dynamic link libraries (dlls) again. This can be done by opening a command prompt as an administrator and typing in the following commands:


regsvr32 dfrgsnap.dll
regsvr32 dfrgui.dll


You might need to switch to the system32 directory first in the command line using cd /windows/system32/.

The second option is to reinstall the defragment tool completely. Locate the file dfrg.inf in the /windows/inf/ directory. Right-click it and select Install from the menu.

Alternatives To The Windows Defragmenter:

There are two possible alternatives. You can try and start the Dos defragmenter by typing in defrag.exe or install a third party disk defragmentation tool like disk defrag.

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However I came across Piriform Defraggler the other day and I was interested in one feature it had… individual file and folder defragmentation. At first I thought this was pretty superfluous considering it would be difficult to notice much of an effect defragmenting a single file or folder…  however I have a laptop and not a huge hard drive so a complete defragment doesn’t take huge amount of time anyway.

If you have a large hard drive however then this could be a very useful tool. I’m thinking of large music collections or DVD rips which go into the hundreds of gigabytes worth of space.

Using Piriform Defraggler to defragment just your music or video collection could have some kind of small effect on performance. Apart from this it has all the other basic features and even a nice monitoring tool which for some strange reason was omitted from the Vista defragmentation application.

Unfortunately there are no scheduling options but it’s simple and works fast enough to keep most people happy.

For anything more advanced I recommend IOBit Smart Defrag. This has the kind of scheduling options you may be looking for as well the ability to defragment and optimise multiple hard drive partitions.

The best thing about Smart Defrag is that it can be set to start up whenever the computer is left idle. I think schedules are a pain as you might in the middle of something when a scheduled task starts up so instead running when the computer is idle is the best solution.

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You need a software called GFCScape to do this. It’s just a small application that requires the Windows .net Framework 2 to run. Run GFCScape after installing it and click on File > Open in the menu. Navigate to your steamapps folder on your hardrive and select one of the files in the list.

All games benefit from defragmenting the files starting with source 2007 while defragmenting the files named like the games benefit only those games. GFCScape will load the file and display information about its contents. Click on View > Columns to add the Fragmentation column to the menu.

Every value greater than 0,0 means that the file is fragmented and will benefit from defragmentation. To be able to defragment the files you need to enable Write Access which can be done in Options > Write Access.

I had to load a new file afterwards to be able to defragment it. To start the defragmentation of the files click on Tools > Defragment. This should only take a matter of seconds and display the fragmentation score of 0,0 after loading the game again.

This way you are able to fragment games like Counter Strike Source, Half-life 2 and Team Fortress 2 resulting in a speed up.

Read More:

GCFScape Download

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Page Defrag can defragment all files open for exclusive access at the next system boot or even at every boot. Information about the process and results are printed directly on screen which is excellent to see if the defragmentation was successful or if any errors occurred doing so.

You can naturally run Page Defrag again in Windows to check the defragmentation level of those files as well. It is not necessary to us the software if your defragmentation tool offers this option as well.

Read More:

Page Defrag

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