How Long Does Defragmenting Take On Windows 10?

One of the major reasons for your slow working and moderately functioning computer or laptop or a device is the neglecting of defragmenting of your hard drive.

Lack of care of your hard drive can often lead to slow processing and in some cases permanent damage to the hard drive.

Learning the defragmenting will ensure your computer never slows down again. The time it takes for defragmenting depends on the RAM of the computer and the disk size.

…a drive of 1GB of memory and 500GB in a hard drive which has not been defragged before will probably take upto an hour to 90 minutes.

More on that below.

So, what does “defragmenting” mean?

It is a process that ‘reorganizes’ and ‘cleanse’ your hard drive in a way that concatenates your files. It is the maintenance of file systems which reduces the fragmentation in your system.

The defragmentation process physically reorganizes the contents of your system into small contiguous and often accessed sequences.

When you’re talking about defragmenting your data on your laptop and or PC, you should think of it as a cycle of optimizing the sensible structure of a disk segment performed to guarantee that documents are saved in a continuous grouping without any interruption of clusters.

In Microsoft Windows, Disk Defragmenter is present by default in the system, which rearranges the stored documents and files in the data to increase the disk access time.

The primary point of defragmentation is to decrease the head travel time which is the time your disk drive takes to highlight an objective area and is in a prepared state to get to it. All of the information and data is stored in relatively similar storage locations.

The Windows Disk Defragmentation has been significantly better and is viewed as superior to its archetype in regards to Windows Vista.

In the background, the Disk Defragmenter runs a low priority task that does not have any effect on the performance of the system.

Most of the time, it only runs when your computer or laptop is not in use or just left in idle mode.

Why disk defragmentation is required and why is it so important to have it?

How about we talk in more normal terms and understand the technicality of this system.

When we delete a file or erase it from our system, obviously its space will be remarked free. And when we save a file, it is saved in the most readily accessible free slot.

But if the file we saved is not fitting in the slot due to its large size, and the space is not sufficiently large to oblige the document, the scrape is separated.

Some of it is stored in the assigned location and the rest will be stored in other storage locations until the size of the file is covered.

But it is not necessary every OS works the same way. Some working frameworks don’t do this from the outset.

They look for slots free on the disks that have not been used for quite a long and would directly go put your file into that slot. This implies that your whole drive has now gotten occupied with void spaces in between like incomplete loopholes.

Thus, defragmentation is used on your disks to diminish all the unrequired and irregular free spaces.

And then, gathering all your documents and sparing them in coterminous squares of memory. This makes document recovery and retrieval on your framework a lot quicker. All of your data is processed by a head, designed on your hard drive, to peruse the information.

The working framework has a detailed map of the apparent multitude of records and where they are stored which guides the head to a particular area and gets to the information stored there. Then the head crosses through the circle to that area and reads the information.

But now, let us imagine if your files were stored in your drive with multiple spaces in between.

Then the head would need to change its area over and over to peruse a document. This would lead to accessing your drive in hours resulting in more wait and patience.

Thus, disk defragmentation attempts to take out this additional time taken and makes it quicker and easier for you to access your files.

Let’s dive into the mechanics of Disk Defragmentation

The defragmentation device naturally by default will just defrag the documents which are under the size of 64 MB. 17000 contiguous clusters are already the pieces of this sized figure at any rate.

It is simple to understand that larger records, for example, games and films won’t be defragged utilizing the default defragmentation until you give it a command to do so by pressing -w.

It is required to make a complete guide of the entire disk, especially all the unfilled spaces and the document sizes, before the PC can begin defragging your drive.

The document from the main free space is selected first to move. It straightforwardly stores the record where the free space is sufficiently enormous.

But if the space is not sufficient, it finds the record close to the free space and moves it some place for the time being.

Thus making the free space greater until it is sufficiently large enough to move the main document there in a contiguous piece.

Contagious spaces are those where the file or the document does not have to be broken and all the data can be saved in one place. Until there are no free spaces left on the disk, this process keeps running.

Basic key elements to never forget:

  • The records which are already in use will not be defragged by the Disk Defragmenter.
  • Records present in the recycle bin will also not be defragged by the disk defragmenter. This is because if the disk defragmenter starts defragmenting those files and documents which are not going to be of any use either way, it will just affect your RAM and processing speed which could be used in defragmenting other useful data.
  • These documents will not be defragged by the disk defragmenter: Hiberfil sys, Bootsec DOS, Safeboot CSV, Safeboot RSV, Safeboot fs, windows page record and memory dump. To ensure it also defrags the boot documents, there are several parameters that can be used.

How long is the process of defragmentation and how many times is it required?

Your hardware plays a vital role in defragmentation which truly relies upon that.

It will take longer if the hard drive size is larger and the PC will require additional time to defrag every one of the files if you have plenty of them to store.

So the duration entirely depends upon the type of hardware, hard drive and the PC you are using to defrag the data as every one of it has its own remarkable case. From a few minutes to a few hours to wrap up, it can take all this while to defrag the files.

It is suggested to abstain from duplicating or moving of documents while continuing to use your system during the defragmentation process, as it will just make the cycle any longer.

If you have an immense drive which is loaded up with a wide range of stuff, it can sometimes even go upto 24 hours of duration to complete the process.

Defragmentation additionally carries out the responsibilities in passes.

It does a harsh go from the start and refines it whenever and after each pass; your hard drive turns out to be more composed and quicker to access.

These are some of the additional commands we can use to pass to the module

You can change the defragging process as you like by simply making use of some of the command line options.

In the principle order of the command line “defrag D:”, the drive is addressed as “D:” which you are attempting to defrag.

The default setting of the defragmentation is “-r” and it defragments data segments under 64 MB. The command “- c” defragments all volumes on your PC and you don’t have to determine a disk letter when using this command.

This is done to perform a full defragmentation of documents of all sizes use “-w” on a predefined disk regardless of the size.

The command “-i” makes the defragmentation just begin and run, but the PC is on idle mode.

To show a complete report of your defragmentation, command “-v” is used to ensure and module the report upon finishing the process.

The command line “- b” is used to merely optimize boot documents.

The command line “-a” will dissect the chosen drive and show a report, consisting of defragmentation reports and investigation.

When you launch the disk defragmenter physically, you can simply pass the command lines utilizing the command prompt.

Also, you can pass a few parameters at the same time by isolating the command with space in the middle.

So how long does the defragmenting take on Windows 10?

The basic math behind defragmenting any hard drive depends upon the size of the hard drive. The larger the hard drive the longer it will take.

The heavier the hard drive, the more files it contains the longer the process of defragmenting.

So, let’s say a drive of 1GB of memory and 500GB in a hard drive which has not been defragged before will probably take upto an hour to 90 minutes.

Considering all of the above options above, Windows 10 is a very efficient system, the defragmenting speed and time can only be limited by the processor of the system.

The more efficient and smooth running of the process the more quickly the defragmentation process takes.

There is always a way to speed up the defragmentation process. The programs or applications running in the background will always delay the defragmentation process.

An out of date software will hold back the defragmentation process so you need your system to be well updated which runs smoothly and efficiently to be able to speed up the defragmentation process.

Another way to speed up the process is to eradicate the unwanted files yourself first before starting the defragmentation process.

Eradicating or deleting the unwanted files will impact the speed of the process hence there will be less files to adjust and the process will take less time to complete.

There are different programs for the defragmentation process. Programs such as:

  • Auslogics Disk Defrag Pro
  • Ccleaner Defraggler
  • Condusiv Diskeeper
  • Glarysoft Disk Speedup
  • IObit Smart Defrag
  • O&O Defrag
  • Raxco PerfectDisk Pro

These different programs around the internet world will provide different services with different objectives but their main objective is the defragmentation of a hard drive.

A person can use a different program by reading their review to the best of their use and choose the one for defragmenting their hard drive.

So the main purpose of defragmenting your hard drive is that it reduces the fragmentation from your hard drive.

It physically organizes the files, the data, and reorganizes the structure in which they are being kept in. More or less it is like cleaning one’s room.

You do not throw away things mostly, you just put them in order and clean and tidy your room by rearranging misplaced items to create a tidy environment.


All in all, the time period for defragmenting your laptops and/or PCs is all about the size of your hard disk.

If its size is greater or larger, it may require more time to complete the defragmentation process and if the size of your hard disk is smaller, it will probably be done in a shorter time.

Therefore, it totally depends upon the size of your hard disks.

And if you’re still wondering whether you need to defrag your Windows 10 system or not, the answer is “probably not”.

Since the windows version 7 and later automatically do it for you, you just sit back and relax while your PC or laptop defrag the data and files along with the tasks you are performing on them.

You need not give it a specific time to wait and let the process take time, it will be done alongside your other tasks.

And it will obviously provide you more space to save your data, organize all your files and the performance of your system will really be up to date by defragmenting your hard disks.