What should I do if the C drive is full after the Win10 update? [6 methods]

User case: After Win10 update, the C drive is full
“Friends, I just upgraded my system from Windows 7 to Windows 10. After the upgrade, I found that my C drive turned red. What should I do? I am not very familiar with computer related knowledge. Can anyone tell me what is taking up space on the C drive and how to solve it if it turns red? Thank you!!!”

User case: After Win10 update, the C drive is full
Part 1: Solving the problem of C disk being full by releasing C disk space
Before solving the problem of C drive being full after Win10 update, we first need to understand what is occupying C drive space. A typical C drive is occupied by files: page files, previous Windows installation files, other system files, and even large application files that you are not aware of. So how to clean up when the C drive is full after Win10 update? Please try the following solution.

Solution 1. Run disk cleanup to free up disk space
Disk Cleanup is a built-in tool in Windows that can help you delete system files, previous Windows installations, Recycle Bin, and other files to free up disk space. Please follow the following steps to operate:

1. In File Explorer, right-click on the C: drive and select Properties.
2. In the pop-up window, click on Disk Cleanup and wait for the calculation process to end.
3. In the Disk Cleanup window, select the file you want to delete, and then click OK.

Select the file you want to delete
✍ Note: To avoid deleting important files, you can click to confirm what the file is.
Solution 2. Uninstall unnecessary applications to reclaim disk space
Some applications that you may never use may occupy a large amount of disk space on the C drive, so you can uninstall these unnecessary applications according to the following steps.

1. Click the start button and select Control Panel.
2. In the pop-up window, click on the uninstall program under the program tab.

Uninstall program

3. Now, you can see the installed programs on your computer. Right click on the unwanted program and select Uninstall.

uninstall
Solution 3. Move the application from the C drive to another drive to free up space
You can transfer some applications from the C drive to another drive with sufficient free space to free up space on the C drive. To migrate software, you can use professional application porters and Aomei partition assistants. With it, you can safely and easily move one or more applications from the C drive to the same hard drive or external hard drive.

You can click the following button to download and install the Aomei Partition Assistant, and use it to migrate applications:

Download software now

Win11/10/8.1/8/7/XP

1. Install and run the Aomei Partition Assistant, click on All Tools>Application Migration in the main interface.

Application migration

2. In the pop-up window, select the C drive and then click Next.

Next step

3. All movable applications on the C drive will be listed here. Select one or more applications and target partitions that you need to move. Then click on migrate.

transfer

4. Confirm that you have closed the application that will move from C drive to D drive. Then click OK.

confirm

5. Wait for the movement process to complete. Then click Finish.

complete
Solution 4. Delete hibernation files to obtain more available disk space
For small hard drives, sleep files may occupy a large amount of space on the C drive. Therefore, in order to obtain more available disk space on the C drive, you can delete the hibderfile.sys file. The following are the specific steps:

1. In the search box, enter a command prompt, right-click on the command prompt in the listed results, and select Run as administrator.

In the pop-up window, enter powercfg.exe – h off and press enter.

Powercfg.exe – h off
Then, you can obtain some available space on partition C.

Part 2: Solving the problem of C disk being full by expanding its space
Usually, after adopting the above solution, you can solve the problem of C drive being full after Win10 update. If you are still not satisfied with the available space on the cleaned C drive, you can obtain more available space by expanding the C drive.

Solution 5. Reassign C drive space
So how to expand when the C drive is full? If there is unallocated space behind the C drive, you can use disk management to expand it. If there is no such unallocated space, it is recommended to use the Aomei partition assistant to reallocate the space from other disks to the C drive.

1. Install and start the partition assistant. On the main interface, right-click on the partition with enough space and select Assign Free Space.

Allocate free space

2. Select how much space you want to allocate to the disk partition you specified in the pop-up window, and then click OK.

confirm

3. Return to the main interface, click the submit button in the upper left corner to preview the upcoming task, confirm it is correct, and then click execute to expand the C drive space.

implement
Part 3: Solving the problem of C drive being full by replacing it with a larger hard drive
Solution 6. Replace the large hard drive
When your current disk capacity cannot meet your storage needs for files and data, you can replace the hard drive with a larger one. Otherwise, you will always be troubled by issues such as the C drive being full after the Win10 update.

To avoid the hassle of reinstalling Windows operating systems and applications, you can clone your disk to a larger disk through the Aomei Partition Assistant. If you do not want to copy the entire disk but need to preserve the operating system, you can choose to migrate the operating system to a larger disk.

conclusion
The above are all three aspects to solve the problem of the C drive being full after the Win10 update. Using different methods to free up disk space on the C drive is a good choice, but if the C drive is not initially adjusted properly or the entire hard drive capacity is insufficient, you can expand the C drive or replace it with a larger hard drive without losing data.

In addition to being able to migrate programs and allocate free space, Aomei Partition Assistant also has many other excellent features, such as lossless MBR conversion to GPT disks, restoring deleted partitions, not deleting data merge partitions, and converting logical partitions to primary partitions. Come and download to experience it!