How to Extend C Drive in Windows 11/10? [100% Work]

Download 4DDiG Partition Manager to extend C drive in Windows 11/10 easily and safely.

5 mins read

Updated on 2024-07-16 12:09:34 to Hard Drive

Is your C drive shrinking? Are you running out of space? Is your Windows 11 or Windows 10 system giving you way too many problems in that department than you can deal with?

Then you’ve come to the right place because here is a detailed guide to help you learn how to extend C drive and solve your computer problems.

Whether you’re dealing with unallocated space, non-adjacent unallocated space, or simply looking to optimize your C drive’s volume, we’ve got you covered. Join us as we journey through three workable solutions to how to extend C drive in Windows 10 or 11.

This article will thereby cover three methods: one (and, in our opinion, the easiest one), with the 4DDiG Partition Manager tool; two, learning how to extend C drive using command prompt; and three, how to extend C drive space using disk management.

That will be followed up with a quick overview of the benefits of such an extension and some FAQs to wrap it all up.

how to extend c drive

Part 1: How to Extend C Drive with 4DDiG Partition Manager? (The Easiest Way)

The first step to learning how to extend C drive is to check out the 4DDiG Partition Manager. We’ve placed this at the top of the list because this tool is not only the easiest to use but also the most user-friendly and has a robust list of features that will no doubt simplify your task.

After all, in partition management, 4DDiG Partition Manager stands out as a reliable and efficient solution for your every need. It has advanced capabilities, including learning how to extend C drive in Windows 11 smoothly and securely.

With 4DDiG Partition Manager, you only need to follow four easy steps to configure how to extend volume on C drive. Still, before we jump right into that guide, let us help you discover an extensive list of the capabilities offered by 4DDiG in terms of features and uses:

  • 4DDiG allows you to resize, split, extend, create, delete, or format your partitions in any way you want to maximize and optimize any available disk space.
  • 4DDiG provides an easy migration pathway from Windows OS to SSD - one click is required, and there is no need to configure an entire system reinstallation!
  • This tool can effectively clone your entire hard drive to back up your data easily.
  • You can also easily convert MBR to GPT, which is great for a Windows 11 upgrade if you’re trying to figure it out without data loss.

And now, let’s figure out the steps required to follow how to extend C drive with 4DDiG Partition Manager!

  • Download, install, and run 4DDiG Partition Manager on your computer. Once it’s open, choose “Partition Management” from the left sidebar and click “Extend/Shrink.”


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     how to extend c drive in windows 11 with 4DDiG step 1
  • To extend the partition, select and pull the right border of the partition in the image that pops up to the right or the left leftwards. Otherwise, you can select one of the adjacent partitions with free space and pull the border to release that space for your intended partition.

     how to extend c drive in windows 11 with 4DDiG step 2
  • Your task list will now have a pending operation, so you must pick “Execute 1 Task(s)” and then select OK to extend your C drive.

    how to extend c drive in windows 11 with 4DDiG step 3
  • Depending on the extent of space you’re looking to attach to the partition, it will take some time. Therefore, don’t close the program to minimize possible data loss and corruption (of files and processes). Once it’s complete, your computer will automatically restart, and your C drive will be successfully expanded.

    how to extend c drive in windows 11 with 4DDiG step 4

Part 2: How to Extend C Drive Using Command Prompt?

If the above process doesn’t work for you, you can try figuring out how to extend C drive using command prompt, which is the second solution on this list and works like a charm.

To complete the process, you’ll need to follow the steps outlined below to make the most of the command-line interface and reclaim valuable space on your Windows 10 or 11 system.


However, note that this method requires you to be extremely careful because one error can damage your entire drive, ruining the system in the process.

  • Press ‘Windows’ key and “X” at the same time, and from the list that pops up, select “Command Prompt (Admin)”. You can also try opening it from the start menu with a right- to select admin access.

    how to extend c drive using command prompt step 1
  • Type in the following:
    • diskpart
      This process activates the ‘diskpart’ utility, a powerful built-in tool for managing disk partitions.
    • list volume
      This allows you to view all available volumes, in this case disks.
    • Select volume x (x is the C drive number)
      You can identify your C drive’s volume number from the above list and type “select volume X,” replacing “X” with your C drive’s volume number.
    • Extend size =number (the number is the MB size for extending the C drive)

      Once the C drive is selected, enter the above command to allot unallocated space and extend the C drive, but only if the space is available.

      how to extend c drive using command prompt step 2

You must press ‘Enter’ after each entry and work according to the answers provided.

Part 3: How to Extend C Drive Using Disk Management?

Another method to figure out how to extend C drive with non-adjacent unallocated space is to follow the steps utilizing Windows disk management, which can then optimize your C drive’s storage capacity. Let’s cover those simple steps in this guide:

  • Press ‘Windows’ key and “R” simultaneously, opening the ‘Run’ Dialogue.

    how to extend c drive with non-adjacent unallocated space disk management step 1
  • Type “diskmgmt.msc” and press ‘Enter’.
    On the other hand, you can also try reaching disk management by right-clicking “This PC” and going from ‘Manage’ to ‘Storage’ to ‘Disk Management’.

    how to extend c drive with non-adjacent unallocated space disk management step 2
  • Open the pop-up menu by right-clicking on the C drive and choosing “Extend”.

    how to extend c drive with non-adjacent unallocated space disk management step 3
  • Add more size to the C drive and click “Next” and “Finish”.

    how to extend c drive with non-adjacent unallocated space disk management

Part 4: Benefits of Extending C Drive

Extending the C drive’s primary goal is to address the immediate concern of stage limitations, but some benefits extend beyond mere space allocation.

Therefore, learning how to extend C drive with unallocated space can enhance your system’s overall performance, ensuring a smoother, better computing experience.

These advantages include:

  • Optimized System Speed: With more space, your operating system (OS) can function more efficiently, which, in turn, infers faster boot times and incredibly improved responsiveness.
  • Enhanced Multitasking: With a lot of extra space, your C drive can run multiple applications and tasks more capably, reducing the chance of the system slowing down during more intense jobs.
  • Room for System Updates: A workable OS requires a lot of space, and a well-extended C drive can help you configure room for updating your system and keeping your computer in tip-top shape.
  • Prevention of System Errors: Lastly, running out of space can lead to several errors, which can prevent your entire computer from working and may even lead to your OS crashing entirely. Learning how to extend C drive can be a preventive measure against such problems.

FAQs About How to Extend C Drive

1. Why Can’t the C Drive be Extended?

There can be a few reasons why the above might happen, and the most common of those can be narrowed down to there being no unallocated space right next to the C drive for the computer to utilize, the existing unmovable files at the end of the partition, or there being limitations imposed by certain system files.

2. How Do I Shrink My D Drive and Extend My C Drive?

To shrink the D drive and extend the C drive, you can utilize a partition manager tool for the most effectiveness. You’ll need to back up the data first, but by utilizing tools like 4DDiG Partition Manager, you won’t have to worry about data loss and can effectively shrink the D drive by extending the C drive.

Final Words

In short, managing the space on your C drive is crucial for maintaining a high-performing system, whether you utilize Windows 10 or 11. Understanding how to extend C drive with unallocated space allows you to fix that problem and make your OS easier to manage.

This guide has covered three easy methods - 4DDiG Partition Manager to learn how to extend volume on C drive, Command prompt, and, finally, Windows Disk management.

For the most hassle-free experience, we still recommend 4DDiG Partition Manager for its unmatched efficiency in handling different scenarios. Unlike the second method, it is also much more safe to use.

Don’t let a cramped C drive hinder your computing experience—expand it with confidence, optimize the system, and enjoy a smoother journey.

William Bollson (senior editor)

William Bollson, the editor-in-chief of 4DDiG, devotes to providing the best solutions for Windows and Mac related issues, including data recovery, repair, error fixes.

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