Windows 10: How to extend C drive in Windows 11 with unallocated space

Discus and support How to extend C drive in Windows 11 with unallocated space in Windows 10 News to solve the problem; [ATTACH]In this tutorial, we will show you how to extend the C drive in Windows 11 with unallocated space. If there’s insufficient space to install... Discussion in 'Windows 10 News' started by WinClub, Dec 15, 2025.

  1. WinClub New Member

    How to extend C drive in Windows 11 with unallocated space


    How to extend C drive in Windows 11 with unallocated space extend-c-drive-unallocated-space.png
    In this tutorial, we will show you how to extend the C drive in Windows 11 with unallocated space. If there’s insufficient space to install system updates, maintain or improve performance, prevent crashes, etc., extending the C drive or system drive can be helpful. You can safely extend the C drive space without losing any […]

    This article How to extend C drive in Windows 11 with unallocated space first appeared on TheWindowsClub.com.

    read more...
     
    WinClub, Dec 15, 2025
    #1

  2. Unallocated Space to C Drive

    Thanks
     
    realtravisbrown92, Dec 15, 2025
    #2
  3. Ruz San Win User
    Unallocated Space to C Drive

    Hi Travis,

    It appears that a disk partition was created but was never assigned its allocation. Assuming there are no files stored in the unallocated partition, perform these steps to combine it with your C: drive:

    • In Disk Management, right-click on (CHow to extend C drive in Windows 11 with unallocated space :) which appears next to the
      Unallocated partition.
    • Select Extend.

    Let us know if you're able to combine the spaces after following the steps above.

    Regards.
     
    Ruz San, Dec 15, 2025
    #3
  4. Anwille Win User

    How to extend C drive in Windows 11 with unallocated space

    extend c drive storage space

    Hi, I'm , an Independent Advisor.

    Disk Management is a Windows built-in tool that supports to increase partition size with its "Extend Volume" feature. However, the program has some limitations in increasing disk space:

    - Extend Volume only works on NTFS and RAW partition. FAT32 and other file systems are not supported.

    - The Extend Volume will grey out if there is no adjacent unallocated space behind the target partition.

    So, the ways to increasing C drive with or without adjacent unallocated space are different. Open the Disk Management, and follow the right tutorials listed below to extend the local disk C drive on your own now:

    #1. Increase C Drive Space with Adjacent Unallocated Space

    Step 1. Right-click This PC/My Computer, click "Manage", select "Disk Management" under Storage.

    Step 2. Locate and right-click on the local disk C drive, and choose "Extend Volume".

    Step 3. Set and add more space to your system C drive and click "Next" to continue.

    Step 4. Click "Finish" to complete the process.

    Note that if that unallocated space on your system disk is not behind the C drive, you can't extend C drive in Disk Management.

    Hope this helps. Let me know if I can help you further!
     
    Anwille, Dec 15, 2025
    #4
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How to extend C drive in Windows 11 with unallocated space

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