Extend partition in Windows Server 2016 safely

It is not an easy task for many people to extend partition for Windows 2016 server, because:

  1. Do not know whether it is difficult and how to do this.
  2. Do not know which tool is right choice, because a bad tool could cause system failure or partition corruption.

Windows Server 2016 has been released for several years, more and more people encountered the issue that allocated partitions is running low on free space. In this article I’ll show you detailed steps to extend Server 2016 partition.

Is it difficult to extend partition in Windows Server 2016?

Actually, it is very easy. Either Windows Disk Management or third party software can help you. Server 2016 Disk Management has Extend Volume Wizard to help expand partition within few steps. However, because of many limitations, it is not the best tool.

Server partition software is much easier to use by dragging and moving. It is much more powerful, too.

Which is the right tool to extend server volume?

Better than other software, NIUBI Partition Editor has powerful technologies to protect your system and data.

  1. The unique software that integrated 1 Second Roll-Back technology, what’s that? This technology is able to automatically roll back the server to the status before resizing in ONE second, if software related error or hardware issue such as powerful failure occur during resizing partitions. So no longer to worry about Operating System and data safely. It is tremendous innovation in disk management industry.
  2. The unique file-moving algorithm helps resize partition 30% – 300% faster than any other tools. Saving much time especially when there are large amount of files in the partition that you want to resize.
  3. Extend NTFS partition on the fly without rebooting server. (close other running applications before starting this program)
  4. To avoid mistake, all operations work in virtual mode before clicking Apply to execute. You can preview, cancel and redo any steps.

How to extend partition volume for Windows 2016 Server?

1. Extend partition with Server 2016 Disk Management

Note: only when there is adjacent Unallocated space on the right side, you can can expand a drive with Extend Volume function.

How to run Extend Volume in Windows Server 2016 Disk Management:

Step 1: Right-click Windows on bottom left in Desktop and select Disk Management, where you’ll see all connected disk partitions.

Step 2: Right-click the partition you want to extend and select “Extend Volume…

Extend volume

Step 3: The Extend Volume Wizard will be launched, click Next to continue.

Extend wizard

Step 4: In the pop-up window, select the available space and click Next, if you want to use just part of the space, remember to type the value in Select the amount of space in MB:

Type value

Step 5: Confirm the operation and click “Finish” to proceed.


The extending operation complete in a short time, 20GB Unallocated space has been added to C drive.

Partition extended

If there is no adjacent Unallocated space on the right, you cannot extend partition. As you see when I right click the system C drive, Extend Volume is grayed out.

Extend grayed out

2. Extend Server 2016 partition with software

With partitioning software, you can shrink other partitions on the same disk to get Unallocated space, then add to the partition that is getting full. Operating System, programs and anything else (except partition size) keep the same with before.

How to extend partition in Windows Server 2016 with NIUBI:

Step 1. DownloadNIUBI Partition Editor and you’ll see all connected disks.

Resize volume

Right click volume D and select “Resize/Move Volume“.

Select Resize

Step 2: In the pop-up window, drag left border rightwards to shrink D.

Shrink d drive

Drag to shrink

Click OK and back to the main window, 20GB Unallocated space created behind C: drive.

Unallocated created

Step 3: Right click C drive and select “Resize/Move Volume” again. In the pop-up window, drag the right border rightwards to hold the Unallocated space.

Extend C drive

Step 4: Click OK and back to the main window, C drive extended to 60GB by adding the Unallocated space. Click Apply on top left to execute, done.

C drive extended

If you use any types of hardware RAID arrays, do not break raid array. If you run Server 2016 as virtual machine in VMware or Hyper-V, follow the same steps, there’s no difference.

Video guide to shrink and extend partition on Windows Server 2016

Note: if you manage many servers, Enterprise Edition can be installed on unlimited servers and PCs to save time and cost.