How to Move Unallocated Space/Partition

By John, Updated on: February 17, 2020

This article introduces how to move Unallocated space to C drive, how to move Unallocated space to the left/right or end of disk.

Applies to: Windows 10, Windows 8, Windows 7, Windows Vista, Windows XP, Windows Server 2019, Windows Server 2016, Windows Server 2012 (R2), Small Business Server 2011, Windows Server 2008 (R2) and Windows Server 2003 (R2).

Unallocated space is part of disk space that is not belong to any volume. Beside creating new volume, Unallocated space can be moved and combine to other partitions. Windows native Disk Management and diskpart command tool cannot move Unallocated space or any partition. Therefore, to accomplish this task, you have to run third party software.

While moving Unallocated space, all files in associated contiguous partition should be moved to new location, too, so there's potential data loss risk if some error happens. You'd better back up first and run safe partition software. Among these software, NIUBI Partition Editor has advanced 1-Second Rollback, Virtual Mode and Cancel-at-well technologies to protect system data. In addition, it is much faster because of the unique file-moving algorithm. It has free edition for Windows 10/8/7/Vista/XP home computer users.

In this article, I'll show you detailed steps how to move Unallocated space to the left/right or end of a disk, and what to do if you want to move Unallocated space from one disk to another.

How to move Unallocated space to the left

Windows Disk Management and diskpart command can only merge Unallocated space to the left contiguous partition. Unallocated space can't be added into the right contiguous or any non-adjacent partition. The typical example is that Extend Volume is disabled for C drive in Disk Management after shrinking D. If there's a tool that is able to move Unallocated space to the left side of D, then Extend Volume will be enabled .

Download NIUBI Partition Editor and you'll see all disks with partition structure and other information. There's 20GB Unallocated space is on the right side of drive D:

NPE

Follow the step to move Unallocated space to the left side of drive D:

Right click drive D: and select "Resize/Move Volume", drag middle position towards right in the pop-up window.

Move drive D

Then Unallocated space is moved next to C drive.

Move Unallocated

Remember to click Apply on top left to confirm and execute, otherwise, this operation only work in virtual mode. The pending operations that are marked as Tick can be done in Windows without reboot.

How to move Unallocated space to C drive

Right click drive C: and select "Resize/Move Volume" again, drag right border towards right in the pop-up window.

Extend C drive

Then Unallocated space is moved into C drive.

Extend volume C

How to move Unallocated space to the right/end of disk

If you want to move Unallocated space to the right side of E: drive, it is similar. Right click E: and select "Resize/Move Volume", drag middle position towards left in the pop-up window. If you want to extend E drive with this Unallocated space, you can combine with NIUBI Partition Editor without moving Unallocated space to the right side. To do this, drag left border towards left in the pop-up window.

To move Unallocated space to the right of E:

Drag to extend

To extend C drive with Unallocated space:

Extend drive E

Watch the video how to move and combine Unallocated space:

Video guide

How to move Unallocated space to another disk

In some computers, C drive is full but there is no other volume or not enough free space on the same disk. Some people want to move Unallocated space to C drive from another separated disk. No software can do this, because a 256GB physical hard disk can't be decreased to 200GB or increased to 300GB.

In that case, you have to copy this disk to another larger one with NIUBI. Extra space in the larger disk will be shown as Unallocated, then you can combine to C drive and other partitions, follow the steps in the video:

Video guide

Conclusion: Windows native tools cannot move Unallocated space, you need to run 3rd-party software that is safe. Follow corresponding method above according to your down disk partition structure. Besides moving and extending partition, NIUBI Partition Editor helps do many other disk and partition operations.

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