How to extend partition volume in Windows 2016 Server

In most of Windows servers, the scheduled partition size does not meet the requirements. The typical example is that C drive is getting full. Many people want to reallocate volume size and extend the system partition. However, to many server administrators, it is not an easy task 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 boot failure or partition corruption.

In this article, I’ll answer these questions and show you how to extend partition in Windows Server 2016 easily and safely.

Is it difficult to extend server partition?

Actually, it is very easy. To extend Server 2016 partition, you may either use Windows Disk Management or third party software. If you extend volume with Server 2016 Disk Management tool, you just need to follow up the Extend Volume Wizard. If you extend Windows 2016 volume with server partition software, you just need to click, drag and drop the on the disk map.

Which is the right tool to extend server volume?

Disk Management is a Windows native tool. Many people think that this type of tool has best compatibility, but it’s not. Disk Management damaged my partitions several times when shrinking partition. If you have both Primary and Logical drives on a disk, pay more attention.

In fact, Disk Management has many shortages such as:

  1. It can only shrink and extend NTFS partition, other types of partitions are not supported.
  2. It cannot change the start position of a volume, so it can only shrink a volume towards left or extend a volume towards right.
  3. It cannot extend partition by shrinking another one. Because, Disk Management Extend Volume function only works when there’s adjacent Unallocated space on the right. You cannot get such required Unallocated space by shrinking any other volumes.

Third party software is much more powerful and there are many choices in the market. However, you’d better back up server in advance and run the safest tool. Nobody likes to see system/partition damage and waste a long time to restore everything.

Better than other tool, NIUBI Partition Editor has Virtual Mode, Cancel-at-well and 1-Second Rollback technologies to protect server system and data. The first two technologies are used to avoid mistake before and after applying changes. The third is used to rollback server to original status automatically and in a flash if anything goes wrong. Furthermore, it is much faster because of the special file-moving algorithm.

2 ways to extend volume in Windows 2016 Server

1. Extend Server 2016 partition with native Disk Management

As I explained above, to extend partition in Windows Server 2016 Disk Management, there must be adjacent Unallocated space. Otherwise, Extend Volume option is grayed out. You won’t get such required space by shrinking any volume. The only option is deleting the contiguous partition on the right.

Extend grayed out

If you want to extend Windows 2016 server partition without any software, there must be a contiguous volume on the right. If there’s no such volume or you cannot delete it, Disk Management cannot help you. If you can delete it, remember to transfer files before deleting.

How to extend volume in Windows Server 2016 Disk Management:

Step 1: Right-click Windows on bottom left of the screen and select Disk Management. Right click a Primary partition such as D: and select Delete Volume. (Note: if D is a Logical drive, Disk Management cannot extend C drive even after deleting D.)

Step 2: Right-click the left contiguous partition such as C: 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 enter an amount in the last box.

Type value

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


2. Extend Server 2016 drive with safe partition software

Some people think that it doesn’t matter if the program is safe or not, because they have backup. Obviously, it’s wrong. There are large amount of data in a server. If the system or partition is damaged, it costs such a long time to restore and verify data. As the fastest and safest tool, NIUBI Partition Editor is the first choice to extend disk partition in Windows Server 2003/2008/2012/2016/2019.

How to extend partition in Windows Server 2016 without deleting volume:

Step 1. DownloadNIUBI Partition Editor, right click either contiguous volume such as D and select “Resize/Move Volume“.

Select Resize

Step 2: In the pop-up window, drag left border rightwards to shrink D. Then part of free space is released and converted to Unallocated on the left.

Shrink d drive

Drag to shrink

Click OK and back to the main window, a pending operation is added on the left.

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, 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 in Windows Server 2016:

Besides shrinking and extending partition in Windows Server 2016 and other servers, NIUBI Partition Editor helps you do many other disk partition management operations, such as move, merge, clone, convert, defrag, wipe, hide, scan bad sectors.

Learn More Download