Free up disk space

Windows 10 Free up disk space

This article introduces how to free up disk space on Windows 10 (32 & 64 bit) with Disk Cleanup and additional 10 methods.

Many people feedback that system C drive becomes full after upgrading to Windows 10 or install some Updates, because there are many large files downloaded and write into C drive. In fact, system partition is filling up by many types of files continuously, so it runs out of space sooner or later if you don’t take care. It’s more likely to encounter this issue if you use SSD, because it is much smaller than traditional mechanical hard disk.

Free up disk space

When system C drive is full, freeing up disk space is an efficient but not the only way. Here I’ll show you the complete solution to fix this issue.

Windows 10 Disk Cleanup

There are many third party system optimization software that can help delete the junk files, but Windows 10 built-in Disk Cleanup is enough in most cases. From Windows XP to the latest Windows 10, I always use this utility to free up disk space. It is easy to use, runs fast, and is able to clean up most common types of unnecessary files. The most important aspect, it is safe.

Starting with version 1803, Windows 10 Disk Cleanup is incorporated into Windows 10’s Settings app, which has more options. In addition, you can set to free up disk space automatically. However, the traditional standalone Disk Cleanup utility is still available.

Steps to free up space with Windows 10 Disk Cleanup:

Step 1: Press Windows and R key on keyboard, type cleanmgr, and then click OK.

cleanmgr cmd

Step 2: Select the drive that you want to cleanup.

Select drive

: Click the check-box in front of the files that you want to delete and click OK. If you are not sure what the files include, click it and you’ll see the description.

Select files

Step 4: Confirm this operation by clicking Delete Files.

Confirm deleting

Disk cleanup will begin.


Step 5: Repeat the steps above to clean up system files.

If you never or have not free up disk space on Windows 10 for a long time, Disk Cleanup utility may help you regain several GBs of disk space. To get more free space in C drive, you may try the additional steps below.

Additional options to free disk space in Windows 10

1. Delete or reduce hibernate

Hibernation is a feature that saves the content in memory to the hard drive allowing you to shut down your device completely without losing your current session. Hibernation is a useful feature but it requires several gigabytes of space to save the content in RAM to the hiberfil.sys file on the hard drive.

You can reclaim disk space by deleting the hibernation files or reduce the size of hiberfil.sys, steps:

Search cmd on task bar on bottom left corner of the screen, right click Command Prompt and choose Run as administrator.

To reduce hiberfil.sys file:

Type powercfg -h -size 50

The size will be changed from default 75% to the minimum 50%

To delete hibernate:

Type powercfg.exe -h off

Hibernate mode will be disable and any associated saved data from previous hibernations will be deleted automatically.

If you want to enable it:

Type powercfg.exe -h on

2. Move installed apps and games

On Windows 10, it’s possible to move certain Microsoft Store apps and games to a different storage device without having to reinstall, (Note: you must have the external storage connected at all times.) steps:

  1. Connect the removable drive.
  2. Press Windows and X on keyboard, then click Settings > Apps > Apps & features
  3. Select an app or game.
  4. Click the Move bottom.
  5. Use the drop-down menu to select the new location.
  6. Click the Move button.
  7. Repeat the steps to move more items to the external drive.

3. Move existing files

  1. Connect the removable drive.
  2. Open Windows File Explorer.
  3. Navigate to the folder with the files/folders you want to move.
  4. Select these files/folders.
  5. Click Home menu on the top > Move to > Choose location.
  6. Click the Move button.

4. Save files to new location

Windows 10 is much more smart that all previous versions. You can change the default save locations for apps, documents, music, pictures, and videos to other place, steps:

  1. Open Settings.
  2. Click SystemStorage.
  3. Under “More storage settings,” click Change where new content is saved.
  4. Click the drop-down menu to select new location.

5. Uninstall apps

You may uninstall some apps and programs that you no longer use or that came preinstalled on your computer from the manufacturer. Steps:

  1. Open Settings
  2. Click System > Apps & features
  3. Click the items that you want to remove and click Uninstall.

6. Turn on Storage Sense

Storage Sense is a relatively new feature in Windows 10 that users may enable to free up disk space automatically when the drive is running low on space. It can delete 3 types of files right now:

  • Delete temporary files that are not used anymore.
  • Delete files in the Recycle Bin
  • Delete files in the Downloads folder.

How to enable Storage Sense on Windows 10:

  1. Open Settings
  2. Go to System > Storage
  3. Switch Off to On under Storage Sense on the right side.

7. Decrease or change location for Recycle Bin

All files that deleted by pressing DEL without SHIFT key will go to Recycle Bin, where you can revert these files to original location manually if you deleted them by mistake. In Windows 10, you can decrease the disk space or reset the location for Recycle Bin. Steps:

  1. Right click Recycle Bin and click “Properties”.
  2. Select a drive for Recycle Bin.
  3. Select Customer size and enter an amount.

8. Change size and location for Pagefile

Page file uses part of disk space as virtual RAM and it is located in C drive by default. You can change it to other partition when C drive is running low. Steps:

  1. Press Windows and R key on keyboard to start Run
  2. Type command “sysdm.cpl ,3” and press Enter.
  3. Click Settings
    Advanced settings
  4. Click Change
    Change pagefile
  5. Select drive, enter amount of Initial size and Maximum size in Customer size, and then click Set and OK. (It requires reboot to take affect.)
    Change settings

9. Decrease size for system protection

System Restore is Windows built-in backup feature that uses disk space to store system snapshots. These snapshots are created automatically by Windows when some operations are made to disk drive. System Restore allows you roll back the system to a recent state. This feature reserves quite a big disk space for its functionality, and one option that you can free up disk space is to reduce the reserved space. Steps:

  1. Press Windows and R key to launch Run, type “sysdm.cpl ,4” and press Enter.
  2. Select C drive and then click Configure Select drive
  3. Sliding towards the left to decrease the Max Usage of disk space. Decrease size

10. Compress files

Compact OS is a tool introduced with Windows 10 that allows you to compress the installation files and built-in desktop applications reducing the footprint and freeing up space.

Note: this operation won’t affect computer performance, but it will modify system files. This operation is only suggested when disk space is extremely low and you have no other choice.

  1. Search for Command Prompt and run as administrator.
  2. Type the command: Compact.exe /CompactOS:always

You can revert the changes using the command: Compact.exe /CompactOS:never

Expand C drive larger

Disk Cleanup and the additional methods help you free up disk space on Windows 10 more or less, but you cannot fix the low disk space issue completely, especially when C drive is created small. Several GBs of free space will be eaten up quickly by new generated junk files. You’d better expand C drive as large as possible.

Download NIUBI Partition Editor Free edition and follow the steps in the video.

As you see, you can extend C drive by taking free space from other drives in the same disk and you just need to drag and drop on the disk map. Partition Editor Free supports Windows 10, 8, 7, Vista, XP (32 and 64 bit). It is 100% clean without any bundles.

Running computer in right way

To completely fix C drive out of space issue, you may consider following options:

  1. If the entire disk is small, replace it with a larger one.
  2. Default installation path of all programs are in C drive, change the path to other separate drive (such as D) when installing programs.
  3. If you already installed the programs to C drive and do not want to reinstall, change the output path of the programs to other large partitions. The programs for videos, games and projects will generate many large files.
  4. Run Windows 10 Disk Cleanup as monthly maintenance utility.

In Summary

Free up disk space with Windows 10 Disk Cleanup to get some precious free space, so this computer can keep running without issue. Extend C drive as large as possible, so there will be plenty of free space. Change Windows and program settings as well as output path to other drive, run Windows 10 Disk Cleanup monthly to clear up new generated junk files.