Merge Unallocated space

Move and merge Unallocated space in Windows Server 2019

Unallocated space is part of disk space that is not allocated to any drives. In Windows Server 2019 native Disk Management snap-in, you can create new volumes with Unallocated space. You can also increase partition size with Unallocated space via Extend Volume, but this space can only be added to the drive that is adjacent and on the left side, so it is useless in most situations.

Merge Unallocated space

In this article, I’ll show you how to merge Unallocated space in Windows Server 2019 to either adjacent drives. With partition software, you can also move Unallocated space and add to C drive or any nonadjacent drives in the same disk.

How to merge Unallocated space

Download NIUBI Partition Editor and you’ll see all disk partitions on the right side. In my test server, there are several partitions plus a 20GB Unallocated space between drive D and E.

Unallocated space

Combine Unallocated space to right partition:

Right click drive E and select Resize/Move Volume.

Extend drive E

In the pop-up window, drag left border towards the left.

Drag to extend

Click OK and back to the main window, Unallocated space is combined to drive E.

Drive E extended

Combine Unallocated space to left partition:

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

Drag to extend

Unallocated space is combined to D drive.

Drive D extended

Both drive D and E are adjacent to the Unallocated space, is there a way to add the Unallocated space to C drive? Yes, but first we need to move the Unallocated space.

How to move Unallocated space

Lets’ back to original state, Unallocated space is between drive D and E.

Unallocated space

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

Move drive D

Unallocated space is moved to behind C drive.

Unallocated moved

How to add Unallocated space to C drive

Similar with above step to merge adjacent Unallocated space, right click C drive and select Resize/Move Volume. Drag the right border rightwards.

Extend C drive

Unallocated space is combined to C drive.

C drive extended

In Summary

It is very easy to merge and move Unallocated space in Windows Server 2019. With NIUBI Partition Editor, you can merge Unallocated space to either adjacent partition by drag the border towards the other side in the pop-up window. If you want to combine Unallocated space to nonadjacent partition, simply drag the middle position in the pop-up window to move Unallocated space, and then you can add the Unallocated space to C drive or any other nonadjacent partition.

NIUBI Partition Editor supports Windows Server 2019, 2016, 2012, 2011, 2008 and 2003 (32 & 64 bit). It provides basic partition management to create, delete, format partition, change drive letter, etc. Advanced management to resize, move, merge, copy, hide, set active, convert, defrag, check partition and much more. Better than all other partition tools, it is integrated with innovative 1 Second Rollback technology to ensure system and data intact.

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How to move & merge unallocated space in Windows Server 2019?
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