How to Change Partition Size in Windows 11 Computer

by John, Published on: July 16, 2021

Partition size is allocated while installing operating system or by computer retailer. After running the Windows computer for a period of time, many users encountered disk space issue. For example, system partition C is too small and it becomes full. There are too few partitions and some people want to create more partitions for different purpose. Is it possible to adjust partition size in Windows 11 computer without losing data? The answer is yes. In this article, I'll introduce how to change partition size in Windows 11 laptop/desktop/tablet computer with free tools.

Change partition size in Windows 11 without any software

The same with previous version, Windows 11 has native Disk Management tool to help change size of allocated partition. In most cases, it can resize partition without losing data. But it is not 100% safe, I've encountered the issue several times this native tool destroyed my data when shrinking partition.

If you want to change partition size for Windows 11 computer without any software, you may try Disk Management, but your disk partition configuration must meet the requirements. Firstly, I'll show you how to operate, and then I'll introduce the shortages of this native tool.

How to decrease partition size in Windows 11 using Disk Management:

  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 using 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 with Windows 11 Disk Management:

  1. It can only decrease and increase NTFS partition, FAT32 and any other partitions are not supported.
  2. It can only make Unallocated space on the left side when shrinking a partition.
  3. It cannot shrink a partition beyond the point where unmovable files are located. That means, you can only shrink little space even if there's large amount of free space in this partition.
  4. It can only extend a NTFS partition when there's adjacent Unallocated space on the right side.

In Windows 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

Best way to change Windows 11 partition size with free tool

Comparing with Windows native Disk Management, NIUBI Partition Editor has many advantages when resizing partition such as:

  1. It is able to resize both NTFS and FAT32 partitions.
  2. It can make Unallocated space on either left or right side when shrinking partition.
  3. It can shrink a partition to minimum size even if there are unmovable files.
  4. It can add Unallocated space to either adjacent partition by one step.
  5. It can move Unallocated space and combine to nonadjacent partition on the same disk.

Besides the ability to change partition size in Windows 11/10/8/7/Vista/XP, NIUBI Partition Editor helps you move, merge, convert, clone, defrag, hide, wipe partition, scan bad sectors, etc. It has free edition for Windows 11/10/8/7/Vista/XP home computer users.

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

NIUBI Partition Editor

How to change drive size in Windows 11 laptop/desktop/tablet with NIUBI:

Watch the video how to decrease and increase partition size with NIUBI:

Windows 11