10 Tips on Solving Windows 10/8/7 Low Disk Space

Daisy updated on Aug 21, 2019 to Partition Master | How-to Articles

About Low Disk Space

"Low Disk Space" is a warning message in the Windows operating system, after which follows a complementary error message like "You are running out of disk space on Local Disk (X:)", and it offers a link to where you can see if you can free space on this drive.

When such a low disk space warning shows up, how much free space should you have so far? It depends on how frequently you received the notification. In general, there are three degrees of warnings for the same error message. Refer to the following table.

Frequency How much free space left
Shows up once, for 10 seconds 200MB
Shows up every four hours, each for 30 seconds 80MB
Shows up every five minutes, each for 30 seconds  50MB

As you can tell from the exact size of free space, when Windows prompts low disk space, you can hardly save new data, download apps, play games or install a recent Windows update. What's worse, PC performance may be affected. You must free up a significant amount of disk space to get rid of the constantly popping up notification.

How to Fix Low Disk Space in Windows 10/8/7

Sometimes, you might think it easy to ignore the popup warning or find a way to disable it for permanent. Indeed, modifying the registry value can stop the notification showing up again, but that's not the thing we talk here. In this article, we introduce an all-round partition manager software for personal users, to let them thoroughly solve low disk space in Windows operating systems in 5 ways, including [1] junk file cleanup, [2]large file cleanup, [3]disk optimization, [4]partition resize, and [5]partition combination.

In the beginning, download the all-purpose free partition manager you need - EaseUS Partition Master. This is a third-party Windows disk management tool that manages Windows users' computers in every way, with dozens of practical features embedded. The worldwide users are so accustomed to having this handy software installed that they can easily and safely extend/shrink a partition, format a partition, convert a file system, migrate Windows OS, clone a hard drive, etc. 

Download Now

 Windows 10 is supported

Next, follow the 5 tips to make full use of EaseUS Partition Master to solve the 'low disk space' problem.

Tip 1. Clean junk files

Junk files include systems junk files (temporary files, Windows system logs...), and browser data, Windows applications data and all the unknown and unuseful data that takes up space. Once a Quora user said, for average computer users who use a computer 8 hours a day, if you didn't do a junk files clean up like in a year, you'll free up around 15GB of space. Where to find abandoned files by OS and users themselves? Run EaseUS partition manager software and look for yourself. 


Step 1: Launch EaseUS Partition Master. Select "Tools" and click "System Optimization".

choose system optimization

Step 2: Click "Junk File Cleanup". Then you can click "Analyze" to let EaseUS Partition Master find junk files on your PC.

choose junk file cleanup

Step 3: You can check and choose junk files and click Clean up. All of the selected junk files will be cleaned and deleted from your PC. Click "Yes" to clean up junk files.

Clean up junk files

Tip 2. Clean large files

Some professions, such as designers or photographers, corporate with extremely large files. A pile of 100MB~10GB documents, pictures, zip files, ebooks or movies are account for most of the low disk space problem on a computer. You don't need to delete all the large files, but an efficient way to scan all existing large files with the exact file size information for reference. Use EaseUS Partition Master's large file cleanup feature, after a complete disk scan, it will return a result of files, with information of name, size, date created and file location, so you can choose which you will no longer use. Just delete the ones and free up some disk space.

Open System Optimization as Step 1 taught, this time choose Large File Cleanup and then follow the wizard to delete unwanted large files.

Clean up junk files

Tip 3. Extend the drive that's running low on free space

Freeing up disk space by deleting junk files and large files are typically basic operations to deal with low disk space. When a drive partition like system drive C or data partition D is filled with a rad bar, try to look at the other partitions. Is there much free space available? If yes, you can try to extend the currently running low disk space drive as instructed. For example, the C drive space is out, and you are going to extend the C drive.

Download Now

 Windows 10 is supported


Step 1: Right-click on a partition next to the C: drive and select "Resize/Move". Drag the end of the partition that is next to the C: drive and shrink it, leaving unallocated space next to the system C: drive, and click "OK". Now right-click on the System C: drive and select "Resize/Move".

extend System partition

Step 2: To add space to the C: drive, drag the system partition end into the unallocated space.

add space to c drive

Step 3: Click the "Execute Operation" button, it will list the pending operations, and click "Apply" to execute the changes and extend the C drive.

confirm to extend system C drive

Tip 4. Combine the low-space drive with a neighboring drive

Extend partition requires unallocated space from the other drive. You can try to merge two adjacent partitions into one to solve the low disk space on one drive to achieve the same effect. For example, E drive is running out of space, and you're going to merge E and F into one to get rid of the low disk space warning.


Step 1: Install and launch EaseUS Partition Master on your PC

Right-click on the partition which you want to add space to and keep on the hard drive, and select "Merge".

Run EaseUS partition manager software

Step 2: Select partitions to merge

1. Select one partition next to the former selected partition.
2. And click "OK" to continue.

Select partitions to merge

Step 3: Merge partitions

1. Click the "Execute Operation" button at the top and then click "Apply".
2. The program will merge space and add files from the second partition to the first partition.

Select partitions to merge

Tip 5. Merge the drive with a non-adjacent drive

It's also possible for EaseUS Partition Master to merge two non-adjacent partitions. To greatly ease the worry of users who don't see much free space on drive F, but drive G.


Step 1: Launch EaseUS Partition Master

1. On the main window, right-click on the partition that you want to merge space to another and select "Delete".

Delete partition for merging non-adjacent partitions

2. Click "OK" to confirm. The deleted partition will display as unallocated.

Confirm to delete partition

Step 2: Move the unallocated space next to the target partition

1. Right-click on a partition next to the unallocated space and select "Resize/Move".
2. Drag the selected partition forward or backward, moving the unallocated space toward the target partition, and click "OK".
Repeat 1 and 2 until the unallocated space is moved next to the target partition.

Move unallocated space to the target partition

Click the "Execute Operation" button and "Apply" to keep all changes.

Step 3: Merge partitions

1. Right-click on the target partition that you need to add space to and keep, select "Resize/Move".

Add unallocated space to target partition

2. Drag the target partition handle into the unallocated space and click "OK".

Merge non-adjacent partitions

3. Click the "Execute Operation" button and click "Apply" to keep all changes.

Keep all changes

If two partitions are separated by unallocated space, right-click on one partition (you want to keep) and select "Merge" > Select another partition and click "OK" > Keep all changes by clicking the "Execute Operation" button and "Apply".

Buggy software or a virus can destroy your system files, draining hard drive space. If you see a hard drive like C drive is filling up rapidly, it's an unusual factor of low disk space as described in the coming part. In this case, use an antivirus program to run a virus scan and cleanup. If this doesn't fix the problem, you might need to reset Windows to an earlier point/factory settings.

How to Effectively Manage Hard Drive Space for Future

Hope that EaseUS Partition Master has released a considerable amount of disk space for at least a short-term use. It always works by cleaning unwanted files and uninstalling unnecessary programs, but you may need to learn some basics to prevent future low disk space associated warnings. Here are some tips that are useful in managing your computer hard drive in a logical and clean way. Always bear in mind, good habits are important to prolong a computer' life.

Following are 5 tips of developing a good habit of smartly using local hard drive space.

Tip 1. Prepare a removable disk for important large files

Personal files such as videos, music, photos and documents can take up a lot of disk space on your computer. They are important, and usually for long-term preservation. 

Important files like those are seldom for use, so it's a good idea to prepare a micro SD card or a USB flash drive to keep them. To reduce the heavy load of local hard drives.

Tip 2. Turn on cloud storage service

Cloud is also a good place to save large files, to reduce the disk usage, at the same time, a very good backup location for your valuable data files.

Tip 3. Install programs on another drive instead of the default

C drive, as we know, is for system installation, and it's closely related to system performance. Low C drive space would affect OS performance, making OS crash all the time. So, when installing programs, customize another location instead of choosing the default C drive.

Tip 4. Empty recycle bin on a regular basis

Windows recycle bin is for holding deleted files and folders for a long term, in case you will need to recover deleted files someday after deletion. But recycle bin folder with too many files there also takes up a plenty of disk space. Regularly cleaning up the recycle bin will help prevent the drive from filling up and running out of free space.

Tip 5. Delete duplicate files

It's inevitable to produce duplicate files. Do not let many copies of the same file eats up your valuable hard drive space. 


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Frequently Asked Questions

Will the "Migrate OS" feature transfer the Windows system files only or the whole C drive?

To ensure that the migrated system will boot normally, the Migrate OS feature will transfer all the files in the system and the boot partitions. Generally, the boot partition is the C drive so the transfer will include all the files in C.

Does EaseUS Partition Master license apply to multiple computers?

The license of Partition Master Professional and Server editions can be used on 1 computer only, while that for for the Technician and Unlimited editions can be used on multiple machines.

What is the difference between EaseUS Partition Master Trial version and the Free version?

Free is for home users only, with most basic functions available such as partition resize and clone. While trial can help you understand how this product works and test what a full license can do on a business or server OS machine.

Will it cause any data loss after resizing the partition in EaseUS Partition Master?

Generally, it will not cause any data loss or boot issue by resizing a partition. However, in order to protect your data, we suggest that you backup the partition before resizing, in case of any unexpected situations such as power outages, computer hardware failures, etc. You can use EaseUS Todo Backup to backup the partition and its trial version is fully functioned for 30 days.

What should I prepare before resizing the partition?

On the partition that is going to be operated, there might be some files being occupied by other programs. To ensure a successful operation, we suggest that you close all the unnecessary software before resizing that partition. Otherwise, EaseUS Partition Master will detect the partition being locked by the other software and require a reboot to resize the partition under boot mode.

About EaseUS Partition Master

All-round disk & partition management software for personal and commercial use. Let it manage your storage drive: resize, format, delete, clone, convert, etc.