Move Disk Space Between C and D Drives on Windows 11, 10, 8, & 7

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Move disk space from your D drive to your C drive in just a few simple steps
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This How.com.vn teaches you how to get extra space on your PC's C drive by allocating space from another partition. Fortunately, your Windows PC comes with a free tool called Disk Management that makes it simple to reallocate unused disk space to a drive that can use some extra room. This will only work if your C and D "drives" are separate partitions on the same drive—you cannot transfer disk space between physical drives.

Quick Steps

  1. Run Computer Management as an administrator.
  2. Click Disk Management.
  3. Right-click the D drive and select Extend…
  4. Click Next.
  5. Select how much space to allocate to the C drive.
  6. Click Next and then Finish.
  1. How.com.vn English: Step 1 Press the Windows key on the keyboard and type computer management.
    Don't click any search results just yet—just run the search for now.[1]
  2. How.com.vn English: Step 2 Right-click Computer Management in the search results.
    A context menu will expand.
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  3. How.com.vn English: Step 3 Click Run as administrator.
    This opens the Computer Management tool with administrative rights.
  4. How.com.vn English: Step 4 Click Disk Management.
    It's on the left panel. A list of disks and partitions will appear on the right.
  5. How.com.vn English: Step 5 Right-click the D drive and select Extend Volume.
    This opens the Extend Volume Wizard.
    • If the option is grayed out, you may not be running Computer Management as an administrator, or the volume is formatted with a file system that cannot be extended.
    • You also won't be able to select this option if your C and D drives are two separate drives (such as an HDD and SSD, two HDDs, or two SSDs). You can only transfer disk space to your C drive if the C and D partitions are on the same drive.
    • It is also possible that there's unallocated space right after the select volume (check that lower-right box for the word "Unallocated"). If there is another volume between the selected partition and the unallocated area, you can delete that volume from the middle to allocate that space to the D drive. But if you do this, you'll lose any data on that middle volume.
  6. How.com.vn English: Step 6 Click Next on the Extend Volume Wizard.
  7. How.com.vn English: Step 7 Choose how much space to allocate to the C drive.
    The default value selects all available free space, but you can always customize this if you want to allocate less.
  8. How.com.vn English: Step 8 Click Next to continue.
    Now you'll see a confirmation screen.
  9. How.com.vn English: Step 9 Click Finish to extend the space to the C drive.
    After a few moments, the selected amount of space will be added to your C drive.
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      About This Article

      How.com.vn English: Nicole Levine, MFA
      Written by:
      How.com.vn Technology Writer
      This article was co-authored by How.com.vn staff writer, Nicole Levine, MFA. Nicole Levine is a Technology Writer and Editor for How.com.vn. She has more than 20 years of experience creating technical documentation and leading support teams at major web hosting and software companies. Nicole also holds an MFA in Creative Writing from Portland State University and teaches composition, fiction-writing, and zine-making at various institutions. This article has been viewed 173,289 times.
      How helpful is this?
      Co-authors: 4
      Updated: March 27, 2024
      Views: 173,289
      Categories: Windows
      Article SummaryX

      1.Open Computer Management as an administrator.
      2.Click Disk Management.
      3.Right-click the D drive and select Extend Volume.
      4.Choose how much space to allocate.
      5.Click Next and then Finish.

      Did this summary help you?

      Thanks to all authors for creating a page that has been read 173,289 times.

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