This space will not be automatically allocated to other partitions, nor will it disappear automatically.
Thus, many users have raised such questions: Is it possible to delete unallocated space?
Unfortunately, you cannot delete the unallocated space directly.

So, how to remove unallocated space in Windows 10/11?
How to Delete Unallocated Space in Windows 10/11
Way 1.
Create a New Partition
(1).
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Here is how to create a new partition in Disk Management.
Right-click theWindows logobutton to selectDisk Management.
Right-snag the unallocated space to chooseNew Simple Volume.

With this tool, you might remove unallocated space for free.
Download, install, and launch MiniTool Partition Wizard.
MiniTool Partition Wizard FreeClick to Download100%Clean & Safe
Step 2.

In the new window, set up the partition label, drive letter, file system, etc.
After that, clickOK.
Finally, click theApplybutton in the lower left corner to make this operation take effect.

This is all about how to remove unallocated partition.
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(3).
The major steps are as follows.

Press theWindows + Rkey combination.
Then typediskpartin the text box and clickOK.
After that, select theYesoption in the pop-up window.
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In the command line window, bang out the following commands sequentially.
you’re gonna wanna pressEnterafter inputting each command.
See Also:How to Wipe Unallocated Space in Command Prompt?
[Full Guide].
Way 2.
Extend an Existing Partition
(1).
Right-hit the target partition next to the unallocated space and selectExtend Volume.
ClickNextand then follow the instructions on your screen to complete the necessary actions.
In this situation, you might use MiniTool Partition Wizard Free to extend the volume.
Launch MiniTool Partition Wizard Free.
To remove unallocated space, you’re gonna wanna drag the handle to the end.
After that, clickOK.
Now you wont see the unallocated space.
Conclusion
This article explains how to delete unallocated space with detailed steps.
Hope the instructions are beneficial to you.