11 Steps to Increase C Drive Space

11 Steps to Increase C Drive Space

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11 Steps to Increase C Drive Space – Whether you’re a tech-savvy user or a complete beginner, we’ve got you covered in this comprehensive guide.

Are you struggling with low disk space on your computer’s C drive? Running out of space on your system drive can be frustrating, but fear not!

The issue of low disk space on your computer’s C drive occurs for several reasons:

  1. Accumulation of Temporary Files: Your computer generates temporary files during various operations, and over time, these files can take up a significant amount of space.

  2. Installed Programs: As you install new software applications and updates, they occupy space on your C drive. Some applications may also store large cache files.

  3. User Data: Your personal files, such as documents, images, and videos, are often stored on the C drive by default. Over time, as you accumulate more data, it consumes disk space.

  4. System Files: The operating system and system-related files are stored on the C drive. Frequent system updates and installations can lead to increased disk usage.

  5. Page File: Windows uses a page file (also known as virtual memory) on the C drive to supplement physical RAM. This file can grow in size, especially if your computer has limited RAM.

  6. Hibernation File: If you use the hibernation feature, Windows creates a hibernation file that can be quite large. This file is used to save the current state of your computer when it hibernates.

  7. System Restore Points: Windows creates restore points to help you roll back to a previous system state if needed. These restore points can consume significant disk space.

  8. Large Downloads: Files downloaded from the internet, such as software installers or media files, may be saved on the C drive if you don’t specify a different location.

Why to increase C Drive space

There are several reasons why you might want to increase your C drive space:

  • Improved System Performance: A full C drive  space can lead to slow computer performance. The operating system needs free space to function efficiently, including creating temporary files and updating programs. When the C drive is crammed, these tasks can take longer or fail altogether.
  • Ensuring Enough Space for Updates: The operating system and many programs require space to install updates. If your C drive is full, you won’t be able to download and apply these critical updates, which can leave your system vulnerable to security risks and bugs.
  • Installing New Programs and Games: Many programs and games require a significant amount of space to install. If your C drive is full, you won’t be able to add new software.
  • Storing Personal Files: Ideally, your C drive should house the operating system and essential programs. However, some users store personal documents, photos, videos and music on the C drive as well. If you have a large collection of these files, you may run out of space on your C drive.
increase c drive spce

How to Increase C Drive Space with Windows Disk Management

If you have another drive with unused space available, you can extend your C drive into it.

Disk Management is a Windows built-in tool that supports increasing 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 partitions. FAT32 and other file systems are not supported.
  • The Extend Volume will grey out if no adjacent unallocated space is behind the target partition.

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

Increase C Drive Space with Adjacent Unallocated Space

Step 1. 

Right-click This PC/My Computer, click “Manage,” and 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 the C drive in Disk Management.

Extend C Drive without Unallocated Space or No Continuous Unallocated Space

To add unallocated space to C drive, first shrink D drive then extend C drive.

Step 1.

 Right-click on This PC/My Computer, and select “Manage” > “Disk Management.”

Step 2. 

Right-click the adjacent partition next to the C drive (it would be D drive by default), and choose “Shrink Volume.”

Step 3. 

Enter the amount of space to shrink, and click “Shrink” to confirm.

Step 4. 

Right-click on the local disk C drive and select “Extend Volume.” 

Step 5.

 Follow the on-screen instructions to add more space to the system C drive.

11 Steps to Increase C Drive Space

In this guide, we’ll unveil 11 practical steps to help you expand the storage capacity of your computer’s C drive, ensuring you have ample space for your files and applications.

Say goodbye to frustrating low disk space warnings with these straightforward solutions.

Step 1: Clean Up Temporary Files

The first step to reclaiming C drive space is to remove temporary files that accumulate over time. These files serve no real purpose once they’ve been used.

Step 2: Uninstall Unnecessary Software

Review your installed programs and uninstall any software you no longer need or use. This can free up a significant amount of space.

Step 3: Move Files to Another Drive

Consider moving large files, such as videos, photos, and documents, to a different drive or an external storage device.

Step 4: Utilize Disk Cleanup Tool

Windows offers a built-in Disk Cleanup tool that can help you remove unnecessary system files.

Step 5: Disable Hibernation

If you don’t use hibernation frequently, you can disable it to recover several gigabytes of space.

Step 6: Clear System Restore Points

Clearing old system restore points can help you regain some C drive space, but proceed with caution.

Step 7: Reduce Page File Size

Adjusting the size of your page file can help save space. Windows can manage this automatically, but you can optimize it further.

Step 8: Disable System Restore

If you have a stable system, consider disabling system restore to free up space.

Step 9: Compress C Drive

Compressing your C drive can save space, but it may affect performance slightly.

Step 10: Move User Folders

You can move user folders like Documents, Downloads, and Music to another drive without affecting your user experience.

Step 11: Upgrade Your C Drive

If all else fails, upgrading your C drive with a larger one or adding a secondary drive is a long-term solution.

Freeing Up C Drive Space

Run Disk Cleanup: This built-in Windows tool helps identify and remove temporary files, downloaded files, and other non-essential items.

Uninstall unused programs: Many programs take up a lot of space, even if you don’t use them regularly. Take inventory of your installed software and remove anything you don’t need.

Move personal files: Documents, photos, videos, and music can take up a significant amount of space. Consider moving these files to another drive or cloud storage.

Clean up your Downloads folder: Many people forget to clear out their downloads folder, which can accumulate a lot of unused files over time.


In conclusion, maintaining a healthy amount of free space on your C drive is essential for the smooth functioning of your computer. By following these 11 steps to increase C drive space and avoid performance issues.

If you have any more questions or need further assistance, feel free to ask in the comments section below. Please check troubleshoot section for this type of problems. Happy computing!



Q1: Why is my C drive space running out of space? 

A1: Your C drive space stores the operating system, system files, and software applications.

Over time, these files accumulate and may fill up your disk space. Regular updates, temporary files, and user data can all contribute to this issue.

Q2: Can I delete files from my C drive to free up space?

A2: Yes, you can delete unnecessary files and applications to create more space. However, this guide will offer additional steps to maximize your disk space effectively.

Q3: What happens if my C drive runs out of space?

A3: Running out of C drive space can lead to performance issues, slow system responsiveness, and even system crashes. It’s crucial to address this problem to maintain your computer’s health.

Q4: Do I need technical skills to follow these steps? A4: Not at all! We’ve broken down the steps into simple instructions that anyone can follow, regardless of their technical expertise.

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