How to Increase/Change Partition Size in Windows 11 Computer

by John, Updated on: September 28, 2022

Disk partitions are created while installing operating system or by computer manufacturer. Many people ask if it's possible to change partition size in Windows 11 computer without reinstalling OS and programs. Because many people encountered disk space issue after running the computer for a period of time. For example, system partition C is getting full, some people want to decrease D/E to increase C drive space. In some Windows 11 laptop/desktop, there's only C drive on system disk, so computer users want to shrink C drive to create more partitions. This article introduces how to change/increase partition size in Windows 11 without losing data.

Adjust partition size in Windows 11 with Disk Management

The same with previous version, there's native Disk Management tool to help change partition size in Windows 10. In most cases, it can adjust partition size without losing data, but it is not 100% safe. My partitions are damaged several times when shrinking partition with this tool. If there are both Primary and Logical partitions on a disk, take care of data.

If you want to change partition size in Windows 11 computer without any software, you may try Disk Management first, but because of many restrictions, you may encounter problem when shrinking and extending partition with this tool.

How to decrease partition size in Windows 11:

  1. Right click Windows logo on taskbar and then click Disk Management in the list.
  2. Right click a NTFS partition and select "Shrink Volume" option.
  3. Enter an amount of space to shrink. (Note: 1024MB=1GB, if you don't enter an amount, the maximum available free space will be used by default.)

How to increase partition size in Windows 11 via Disk Management:

  1. Right click the right adjacent partition (such as D:) and select "Delete Volume" option.
  2. Right click the left adjacent partition (such as C:) and select "Extend Volume" option.
  3. Follow up the pop-up Extend Volume Wizard via several clicks.

Restrictions to change partition size in Windows 11/10 via Disk Management:

In Windows 11 Disk Management, you cannot increase a partition by decreasing another one. For example, after shrinking D drive, Unallocated space is on the right of this partition. It is nonadjacent to C drive and is on the left side of E drive, therefore, Extend Volume option is grayed out.

Extend Volume greyed out

Change partition size in Windows 11 with free partition tool

To decrease and increase partition size in Windows 11 laptop/desktop/tablet, NIUBI Partition Editor is better choice, because it has many advantages than Disk Management such as:

Better than other third party software, NIUBI Partition Editor has innovative 1-Second Rollback, Virtual Mode and Cancel-at-well technologies to protect system and data. It has free edition for Windows 11/10/8/7/Vista/XP home computer users. Besides the ability to resize partition, this free tool helps you move, merge, convert, clone, defrag, hide, wipe partition, scan bad sectors and much more.

Download the free edition, you'll see disk partitions with structure and other information on the main window.

NIUBI Partition Editor

How to decrease and increase partition size in Windows 11 with NIUBI:

Watch the video how to adjust partition size in Windows 11 without losing data:

Windows 11