By Cherry / Last Updated October 14, 2019

Each partition on the hard disk is like a shelf in bookshelf. You need to put different category books in different shelf just like you have to store your different data separately. For instance, you install operating system on C drive, store files, videos, and pictures in D drive.

However, with the daily increasing applications, caches, temporary files, you may receive Low Disk Space warning. It means that there is not enough free space on this drive.

If there error Low Disk Space warning occurs to C drive, you could find that the performance of your computer will be reduced dramatically, which would affect your working efficiency. Furthermore, if your Windows 10 is in low disk space, you are not allowed to apply some programs.

How to solve Low Disk Space warning in Windows 10?

Since the warning appears out of inadequate free space on the drive, you can consider solving it through freeing up disk space or increase the partition size of the drive where the error appears.

Get Low Disk Space warning fixed via reclaiming disk space

This part is about how to free up disk space with different ways.

Way 1. Uninstalling programs that you don’t use

Applications can take up lots of disk space. It is possible that you have installed some application that you don’t need any more. To uninstall these unnecessary applications, follow the steps given below:

1. Press Windows + R, input control in the pop-up window and hit Enter to open Control Panel.

2. In Control Panel, click Uninstall a Program under Programs.

3. You’ll see a list of program, choose the only you want to remove, right click it and click Uninstall.

Way 2. Run Disk Cleanup on C drive

Disk Cleanup cam help you to remove temporary files and some other unnecessary data. But it only works significantly on C drive. If Low Disk Space warning is on C drive in Windows 10, run it.

1. Open File Explore, right click C drive, choose Properties.

2. Choose Disk Cleaup under Gerneral.

3. It will scan your drive and calculate how much space that you can save.

4. Choose the ways that you need to delete from the drive and click Ok.

Way 3. Delete the partition

You can also choose to delete partition to wipe all data from this partition at once. What you need to pay attention is that this way is not suitable for system related partition like C drive; otherwise, your machine will be unbootable.

PS.: You can back up your wanted files before partition deletion.

1. Press Windows + R simultaneously, input “diskmgmt.msc” and click OK to open Disk Management.

2. Right click the partition with Low Disk Space warning and choose Delete Volume.

3. Follow the next prompts to complete the process.

4. After deletion, you can create new partition with the unallocated space and restore your necessary data on it.

Fix Low Disk Space warning via extending volume

If you don’t want to remove any files from the drive or the drive is previously allocated with too small capacity, it is reasonable to extend the partition to settle out the issue.

When there is a contiguous unallocated space behind the partition that you need to extend, you can extend it via Disk Management. If there is a partition between the unallocated space and the partition that going to be extended, you need to move the partition; but Disk Management doesn’t offer such function. Of course, you can choose to delete the partition between the unallocated space and the partition in low disk space. But here I prefer to introduce you a trusted and powerful partition manger – AOMEI Partition Assistant Professional.

It enables you to increase the partition size with non-contiguous unallocated space on the same disk without deleting any partition. If there is no unallocated space, you can use it to allocate free space from one partition with enough space to the partition in low disk space. Now, have a look at how it extends partition without data loss (Take extending C drive as an example).

Before you do:

Make sure there is no running program in the partition which you are going to extend. Otherwise, the program will inform you to close them all or the operations will be processed in PreOS mode.

Step 1. Install AOMEI Partition Assistant Professional, launch it. Right-click Extend Partition Wizard on the left bar.

All Tools

Step 2. Select Extend system partition and then click Next.

Extend Partition Method

Step 3. Choose a partition you want to add free space into system partition from and then click Next.

Select Partitions

Step 4. Right move the bar to allocate free space to system partition and then click Next.

Extend Size

Step 5. After making all the settings, you can click proceed to apply the operation.



  • If your current whole disk is with small capacity, you can choose to replace it with a larger one without reinstallation all applications and system through disk cloning.

  • AOMEI Partition Assistant Professional works well under Windows 10/8/7, XP and Vista. To resize partition in Windows Server, you can employ AOMEI Partition Assistant Server.