How to fix the issue can't shrink partition in Windows 11 computer

by John, Published on: July 22, 2021

Besides creating, deleting and formating partition, Windows native Disk Management tool has the ability to shrink and extend partition. Some people want to shrink a partition to create more volumes or extend another one. But they find that Shrink Volume option is grayed out, or this option is activated but they still cannot shrink partition. In this article, I'll introduce why Disk Management can't shrink partition in Windows 11 and how to solve this problem.

Why cannot shrink partition in Windows 11 Disk Management

There are 3 common reasons why you can't shrink partition in Windows 11 Disk Management, I'll introduce one by one.

Reason 1 - file system is not supported

Windows Disk Management can only shrink the partition formatted with NTFS file system, FAT32 and any other types of partitions are not supported. Therefore, if you right click a EXT2/3 or FAT32 partition in Windows 11 Disk Management, Shrink Volume option is grayed out.

Reason 2 - file system error

After running Windows computer for a period of time, many partitions may have file system error. In most cases, you won't find any difference in daily usage, but you'll encounter issue when shrinking and extending partitions.

When you right click a NTFS partition with file system error, Shrink Volume option is activated, but you cannot enter an amount of space, or the Shrink button is disabled.

Reason 3 - there are unmovable files

After you right click a partition and click Shrink Volume, there's a tip in the pop-up window "You cannot shrink a partition beyond the point where unmovable files are located". These unmovable files include paging file, hibernation and other large system required files. Therefore, when you shrinking C drive in Windows 11 Disk Management, you may encounter this issue. Although there's plenty of free space in this partition, Disk Management gives you little or even 0MB space to shrink.

What to do if you are unable to shrink volume in Windows 11

  1. If you want to shrink a FAT32 partition, Disk Management is useless, run NIUBI Partition Editor instead.
  2. Repair file system if Shrink button is disabled or if you cannot enter an amount of space.
  3. Run NIUBI Partition Editor, it is able to move these "unmovable" files. Therefore, you can shrink a partition to minimum size if you want.

NIUBI Partition Editor has free edition for Windows 11/10/8/7/Vista/XP home computer users.

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

NIUBI Partition Editor

How to repair file system when you cannot shrink data partition in Windows 11 Disk Management:

  1. Press Windows + R hotkeys, type cmd and press Enter.
  2. In the command prompt window, type chkdsk D:/v/f and press Enter. (D is the drive that you want to shrink)

How to repair file system when you cannot shrink C drive in Windows 11 Disk Management:

  1. Click Windows logo on taskbar and type cmd, click "Run as Administrator".
  2. In the command prompt window, type chkdsk C:/v/f and press Enter.
  3. It will report this partition can't be locked and ask you if schedule this task when next Windows boot up. Type Y and press Enter.
  4. Reboot your computer and fix file system error automatically.

Follow the method in the video to shrink partition in Windows 11 laptop/desktop/tablet computer:

Windows 11

Besides shrinking partitions in Windows 11/10/8/7/Vista/XP computer, this free partition software helps you do many other disk partition management operations such as merge, extend, move, convert, defrag, hide, wipe, scan bad sectors.

Download