How To Extend C Drive In Windows 10

Running out of space on your C drive in Windows 10 can be frustrating, especially if you need more storage for your applications and files. Fortunately, you can extend your C drive without purchasing a new hard disk or formatting your existing one. In this blog post, we’ll discuss three methods to extend the C drive in Windows 10:

  1. Using Windows Disk Management
  2. Using Command Prompt
  3. Using Third-Party Software

Method 1: Using Windows Disk Management

Windows Disk Management is a built-in tool that allows you to manage your disk partitions. Here’s how you can use it to extend your C drive:

  1. Press Windows + X and select Disk Management from the menu.
  2. Find your C drive in the list of volumes. Make sure there’s unallocated space right next to it. If not, you may need to shrink another partition to create unallocated space.
  3. Right-click on the C drive and select Extend Volume.
  4. Follow the prompts in the Extend Volume Wizard to allocate the desired amount of unallocated space to your C drive.
  5. Click Finish to apply the changes.

Note: If the unallocated space is not adjacent to the C drive, you may not be able to extend it using Disk Management. In this case, consider using a third-party partition manager or method 2.

Method 2: Using Command Prompt

You can also use the command prompt to extend your C drive. Here’s how:

  1. Press Windows + X and select Command Prompt (Admin).
  2. Type the following command to start the DiskPart utility:
  3. Identify the disk containing your C drive by typing:
    list disk
  4. Select the disk containing your C drive using the following command:
    select disk X (Replace X with the number of the disk)
  5. List the available partitions on the disk:
    list partition
  6. Select the partition you want to extend (usually the C drive):
    select partition X (Replace X with the number of the partition)
  7. Extend the partition by typing:
    extend size=XXXXX (Replace XXXXX with the amount of space you want to add, in megabytes)
  8. Exit DiskPart by typing:

Method 3: Using Third-Party Software

Third-party partition management software, like EaseUS Partition Master, AOMEI Partition Assistant, or MiniTool Partition Wizard, can help you extend your C drive more efficiently than the built-in Windows tools. These programs come with an easy-to-use interface and more advanced features.

To extend your C drive using third-party software, follow these general steps:

  1. Download and install the partition manager of your choice.
  2. Launch the program and locate your C drive in the list of partitions.
  3. Select the C drive and choose the option to extend or resize the partition.
  4. Allocate the desired amount of unallocated space to your C drive.
  5. Apply the changes and restart your computer if prompted.


Extending the C drive in Windows 10 is a simple process that can be accomplished with built-in tools or third-party software. Always remember to back up your data before making any changes to your disk partitions to prevent data loss.