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How to Free Up Space on C Drive in Windows 11/10 [8 Efficient Ways]

This article gives eight solutions to help the problem: How to free up space on C drive. It teaches readers step-by-step and introduces a professional disk manager tool to extend the C drive to get more space.

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Updated by Sherly on Apr 09, 2024

C drive is always full? Are you looking for a detailed guide on how to free up space on C drive? Don't worry! We have got you! This article will show you 

Why Does C Drive Get So Full?

The C drive is the primary hard drive partition that contains the operating system and related system files. You can check total disk space in Windows 11. It usually becomes full after using the device for some time. This is because it stores the following things:

  • Windows operating system, system-related files, and settings
  • Installed applications, Windows built-in programs, and downloaded software
  • User data, such as documents, photos, and personal data stored on the desktop

Sometimes, you can move unallocated space to the C drive to get more space. There is a link for you to help.

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How to Move Unallocated Space to C Drive in Windows 10/11 [Step-by-Step Guide]

Unallocated space can be used to extend another partition or create a new volume. In most cases, users may want to use the unallocated space to extend another partition.

disk management

As we can see, the operating system is located on the C drive. Over time, the operating system takes up more and more space as it needs to be constantly updated to improve performance.

c drive full

On the other hand, we may save large work files and download large game videos or other files to the c drive for daily use. When too many large or cluttered files are stored on your computer, you may experience some serious performance problems.

By the way, we list some other problems you may run into and you can click these links to help:

However, how to free up space on C drive in Windows? Let's continue reading to learn the methods to solve this problem!

How to Free Up Space on C Drive in Windows - Eight Efficient Ways

There are basically two main directions to free up space on C drive. One is to extend the C drive, and the other is to free up space on the C drive. In this part, we provide eight ways for you to help with free up space on C drive.

Method 1. Extend C Drive to Get More Space

Method 2. Transfer Larger Files to Another Drive

Method 3. Run Disk Cleanup

Method 4. Enable Compact OS

Method 5. Delete Temporary Files

Method 6. Empty Recycle Bin

Method 7. Uninstall Apps You No Longer Need

Method 8. Disable Hibernation Mode

So let's learn the specific ways one by

Method 1. Extend C Drive to Get More Space

Extending the C drive is the most effective way to get more space on the C drive. Here, I would like to introduce a professional disk management tool for Windows to you, EaseUS Partition Master Professional. 

It breaks the rules in Windows and gives more flexibility to extend/move partitions. Most importantly, EaseUS Partition Master Professional simplifies the whole process without causing data loss by adding adjacent or non-adjacent unallocated space to the C drive.

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Windows 11/10/8/7100% Secure

Step 1. Right-click on the D: partition with enough free space and select "Allocate Space".

Select partition to allocate space

Step 2. Select the target partition - C: drive and drag the partition panel rightward to add the free space from D: drive to C: drive. Then click "OK" to confirm.

Allocate space to extend partition

Step 3. Click the "Execute Task" button and click "Apply" to start the process of moving free space from D: drive to C: drive.

finish extending partition

EaseUS Partition Master is compatible with all Windows systems, and you can even free up disk space on Windows 8 with it. Besides adding the unallocated space to the C drive, EaseUS Partition Master still gets many other features, such as:

Therefore, if you are facing disk management problems, you can download it, and it is sure to help you a lot.

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Windows 11/10/8/7100% Secure

Method 2. Transfer Larger Files to Another Drive

You can also transfer larger files to another drive to free up space on the C drive. There is a nice professional PC transfer software, EaseUS Todo PCTrans. It can help you transfer large files and programs to another drive efficiently. Let's see how.

Step 1. Run EaseUS Todo PCTrans on your PC. Choose "Large File Cleanup" > Click "Start" button to move on.

large file transfer - 1

Step 2. Select the disk you want to scan, click "Scan."

large file transfer - 2

Step 3. When the scan completes, files larger than 20M will be listed. Choose the wanted files and target drive to move. (You can choose the triangle icon to select destination or click "Browse" to pick the wanted place.)

large file transfer - 3

Step 4. Click "Move" button, then check files on the pop window. Then click "Move" button again.

large file transfer - 4

Method 3. Run Disk Cleanup

Windows comes with some great tools to help you keep your computer storage neat and tidy. Disk Cleanup is one of these tools. It allows you to delete data, such as temporary files, which can reach gigabytes (GB) of data over time. Follow the steps and have a try.

Step 1. Click "This PC." Then right-click the C drive and choose "Disk Cleanup" from the best match.

run disk cleanup

Step 2. It will show you a lot of files and file sizes taken by each file type. Then choose what you don't want. Then, click "OK."

Method 4. Enable Compact OS

Compact OS reduces the footprint of Windows applications to free up disk space, which makes sense in the context of Windows disk cleanup. But before using it, be careful to back up the important data on your C drive.

Step 1. Search for Command Prompt and choose "Run as Administrator."

Step 2. Then, type the command "Compact.exe /CompactOS:always" and hit Enter.

compace os

Step 3. It will take 20 minutes or so, and wait patiently.

At any time you want to recover, you can run the opposite command: Compact.exe /CompactOS:never

Method 5. Delete Temporary Files

Temporary files will also occupy the C drive space, so we need to delete them regularly. Now, let's see how.

Step 1. Press "Windows + I" to open Settings, and choose "System" and " Storage."

Step 2. Then, select "This PC (C:)" to analyze.

click storage

Step 3. Click on "Temporary files." Windows will list "Temporary files," "Recycle bin," "Downloads folder," and more folders in this section.

click on temporary files

Step 4. Tick what you want to delete and then click "Remove files."

Method 6. Empty Recycle Bin

When files are deleted, Windows does not remove them from the drive. Instead, they are relocated to the Recycle Bin and marked as deleted. However, since the Recycle Bin gets larger over time, you can first empty it to free up space on the C drive.

Step 1. Open the "Recycle Bin" from the desktop.

Step 2. Select all the files and documents in the Recycle Bin, right-click on them, and select "Delete."

clean up recycle bin

Method 7. Uninstall Apps You No Longer Need

If you have installed some programs that were used to solve your problem but now you no longer need them, you can uninstall them to free up space on your C drive.

Step 1. Right-click on the Windows Start menu and click on Programs and Features. 

Step 2. Then right-click on the program you no longer need and select "Uninstall."

Step 3. Repeat this process to remove the rest of the unnecessary applications.

Method 8. Disable Hibernation Mode

Hibernation in computing is the process of powering off the computer while maintaining its state. If you have enabled Hibernate mode in Windows, it will also take up several gigabytes of space on your C drive, so follow the steps below to disable it.

Just open CMD and run the following command: Powercfg /hibernate off

disable hibernation mode

Then, you can disable hibernation mode.

Try these ways to free up space on your C drive. By the way, there are some links for you if you have problems, such as:


Well, do you know how to free up space on C drive now? It is a common question among Windows users. We provide eight efficient ways for you to free up space on C drive. You can choose one easy way based on your needs. By the way, if you have other questions about freeing up space on C drive, continue reading the next paragraph.

FAQs About How to Free Up Space on C Drive

This part lists three questions related to how to free up space on C drive. Continue to read if you need.

1. What can I delete from C drive to free up space?

You can remove recycle bin files, upgrade log files, Windows Update Cleanup files, temporary internet files, device driver packages, and other temporary files.

2. Why do I have so little space on my C drive?

The reasons for low C drive space may be as follows.

  • Viruses and malware may keep generating files to fill up your C drive.
  • You may have saved large files to a C: drive, but you don't know.
  • Pages files, previous Windows installations, temporary files, and other system files may have taken up space on the C drive.

3. How can I solve the C drive full problem?

You can try the following methods:

  • Uninstall a program
  • Remove duplicate files
  • Remove large, unnecessary files
  • Run Disk Cleanup
  • Delete temporary files
  • Extend C drive via EaseUS Partition Master

How Can We Help You

About the Author

Updated by Sherly

Sherly joined EaseUS in 2022 and she has always loved writing articles and enjoys the fun they bring. She receives professional training here, focusing on product performance and other relative knowledge. She has written over 200 articles to help people overcome computing issues.

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