[Solved] Not Enough Space on C Drive in Windows 11, 10, 8, 7

Many Windows users may receive Low disk space waning, this means computer is reminding you that there is not enough space on C drive. At this time, the C drive does not have enough space to support software updates/upgrades, and program installation. You may be unable to download the file there is not enough space on disk C:/.

What’s more, the Windows operating system will run slowly. And you cannot store more data/files. So, it is necessary to fix C drive not enough space and free up the C drive space in Windows 11/10.

Solutions to "not enough space on C drive" in Windows 11, 10, 8, 7

Don’t know how to solve the problem of “not enough space on C drive”? Here are several solutions to free up the disk space of C drive, including delete hibernate file, clean disk, uninstall programs, and try powerful partition manager. When your C drive is out of no reason, you can also follow this guide to clear space on C drive on all Windows OS.

Quick Solution to Extend C drive and Fix "Not Enough Space on C Drive"

When your computer's C drive is running out of space, using professional partition management software to extend the C drive is a fast and effective solution. AOMEI Partition Assistant Professional provides an "Allocate Free Space" feature to add space to C drive. It can help you add free space from other partitions to the C drive on the same disk without losing data.

Now, follow the steps below to extend C drive to free up disk space in Windows 11/10 with a few simple clicks:

Tip: If there is unallocated space on the system disk, merge C drive with unallocated space is another good idea to extend it.

Step 1. Right-click the D drive and select “Allocated Free Space”.

Step 2. In the pop-up window, you can allocate free space from D drive to C drive. And click “OK”.

Step 3. Finally, click “Apply”  to execute the progress.

How to Free Up Space on C Drive

Unwanted large junk files, large files, a lot of installed programs and temporary files can take up most of the space on your C drive. You can also solve the C drive full problem by freeing up space on your hard disk.

Solution 1. Delete hibernate file

Windows reserves about half of the RAM space for the hibernation file. If the computer RAM is 8GB, the hibernation file is about 4GB in size. The steps of delete hibernate file are:

Step 1. Go to start menu, type “cmd” and right-click it to run as administrator.

Step 2. Type “powercfg.exe -h off” and press “Enter”.

Then, you will see a few more gigabytes of free space on the system drive. After figuring out how to free up space on C drive, you can also extend it. Usually, there will be extra free space on other partitions, you can use this free space to extend the C drive.

▶ Solution 2. Run Disk Cleanup

Disk Cleanup is a Windows built-in tool that cleans up Thumbnails, Windows Update files, Delivery Optimization Files, Temporary files and more. You can refer to:

Step 1. Right-click the disk and select "Properties".

Step 2. Click the "Disk Clean-up" option.

Step 3. Check the files you want to delete, and then click "OK".

▶ Solution 3. Uninstall some programs

Windows has many built-in programs (especially in Windows 10), and you may never use some of them. So, you can uninstall the programs that you do not actually need, and you can also uninstall the programs that won’t be needed in the future to free up space.

Step 1. Click the "Start" button.

Step 2. Then, click “Control Panel” > “Programs” > “Uninstall a program”.

▶ Solution 4. Move programs from C to another drive

If you don't want to uninstall or remove any programs, you can try to move installed program to another drive for freeing up space. Thus, you can use the AOMEI Partition Assistant Professional. It provides the "App Mover" feature, allowing you to transfer apps between different drives and make sure they will load successfully in the new path. Please free download it and have a try.

 Step 1. Install and launch PA Professional, click “Tools” on the right, then select the “App Mover” under "Free up".

Step 2. Choose C drive and click "Next".

Step 3. Select apps you want to move, choose the destination path and click on "Move".

Step 4. Click "OK" on the pop-up window.

Upgrade C Drive Disk to A Large One

If you are constantly running out of space on your C drive, try upgrading your system disk to a larger one or adding another hard drive to your computer.

AOMEI Partition Assistant supports you to upgrade your entire hard disk including OS to a bigger one without losing data. With the Disk Clone or Migrate OS function, you can quickly perform a hard disk upgrade.

Step 1. Install and launch AOMEI Partition Assistant, click "Clone" in the main interface, and then select "Clone Disk", or "Migrate OS."

Step 2. Select the C drive you want to clone as the source disk, and then click "Next". Then select the destination disk and click "Next".

Step 3. Check the source and destination disks or change to "Sector to sector cloning" and continue.

You can also click the Settings button to resize the partitions on the destination disk or check "4k Alignment" to increase the read/write speed of your SSD. 

Step 4. View Pending Actions to preview the disk cloning operation and click Apply and Proceed.

Why there is not enough space on C drive?

Many users may be puzzled about the reason of “not enough space on C drive”. What is taking up space on the C drive? In general, the main reason for the low disk space problem is that the C drive is occupied by many files, and the free space is very limited. If you saved large files to C drive that you are not aware of (For example, the default download folder is located in C drive), the space of C dive will get not enough too. Besides, some page files, temporary files, and other system files may take up space on the system partition.

Verdict

Now, you know to deal with the problem not enough space on C drive. Besides Allocated Free Space, AOMEI Partition Assistant Pro also provides you many other useful functions like Wipe Hard Drive, Partition Recovery Wizard and so on. If you want to install Windows to USB someday, AOMEI Partition Assistant can help you too. If the operating system of your computer is Windows Server, please turn to AOMEI Partition Assistant Server to enjoy more advanced features.