How to move Unallocated space
As the name, Unallocated space is part of disk space that is not allocated to any volume. You can create new volumes with Unallocated space. With the advanced functionality of Extend Volume in Windows 10/8/7/Vista and Server 2016/2012/2008, you can merge Unallocated space to C drive or any other volume to increase free space. However, Extend Volume only works when there is adjacent Unallocated space on the right side. After shrinking D with Shrink Volume, the Unallocated space is next to D drive, so Extend Volume is disabled for C drive. In this situation, you can move Unallocated space next to C drive and then Extend Volume will be enabled.
In this article, I’ll show you detailed steps how to move Unallocated space to behind C drive, how to merge Unallocated space to C drive and how to move Unallocated space to the right side if you want. These steps are valid for Windows 10/8/7/Vista/XP and Server 2016/2012/2008/2003.
How to move Unallocated space next to C drive
Step 1: Download NIUBI Partition Editor, right click drive D and select Resize/Move Volume.
In the pop-up window, you’ll see drive D and the adjacent 20GB Unallocated space.
Step 2: Drag middle position of drive D rightwards:
Unallocate space will be moved to the left side of drive D.
Step 3: Click OK and back to the main window, Unallocated space is moved to next C drive. Press Apply button on top left to proceed.
- The tasks listed below Pending Operations on bottom left with tick can be done in Windows without rebooting.
- You may click Undo on top left to cancel this task, if you do that, Redo button becomes available.
- All tasks and Undo or Redo operations work in virtual mode, your disk partition won’t be changed until click Apply to execute.
You just need to click and drag to move Unallocated space to behind C drive, then how to add it into C drive?
How to add Unallocated space to C drive
Right click C drive and select Resize/Move Volume again. You’ll see C drive and the adjacent Unallocated space in the pop-up window.
Drag the right border of C drive rightwards to combine the Unallocated space.
As you see in the main window, 20GB Unallocated space is added into C drive. Remember to click Apply.
How to move Unallocated space to the right side
Not every people want to move Unallocated space to C: drive, instead, some people want to combine the Unallocated space to other volume, or just move Unallocate space to end of this disk.
Let’s back to the first screenshot, 20GB Unallocated space is between drive D and E.
If you want to merge the Unallocated space to E drive, you can do this without moving Unallocated space to next E.
Similarly, right click drive E and select Resize/Move Volume, drag left border leftwards in the pop-up window.
An then the Unallocated space will be combined to E.
If you want to move Unallocated space to the right side, right click E and select Resize/Move Volume, in the pop-up window, drag middle of E leftwards.
Unallocated space will be moved to the end.
Conclusion: as long as there is adjacent Unallocated space on either left or right side of a volume, you can drag middle of this volume to move Unallocated space, or drag either border to combine the Unallocated space.
To move Unallocated space, Windows Disk Management cannot help you. If you use Windows 10, 8, 7, Vista or XP (both 32 and 64 bit), you may use free partition manager, but for Windows servers, you need server partition software.