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 at 8:27 AM.

  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.

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  2. Unallocated Space to C Drive

    Thanks
     
    realtravisbrown92, Dec 15, 2025 at 8:28 AM
    #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.
     
  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!
     
Thema:

How to extend C drive in Windows 11 with unallocated space

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