How to increase partition size in Windows Server 2016?

The typical disk space issue in a server is lacking of free space in a partition. To system C drive, Windows updates, applications, temp files and many other kinds of files fill it up quickly, so C drive is getting full very quickly. To a data drive, the database file can eat up free space easily, too. In this situation, you can increase the partition size by using free space in other drives. In this way, you can get out of this trouble fast and easily. Many people have feedback such insufficient space issue in the latest Windows Server operating system, so today I want to share some experiences how to increase partition size on Windows Server 2016.

Actually, Unallocated space (if there is) and free space in other volumes can be used to increase partition size, so here I’ll divide into 2 parts.

Part 1: Increase C drive size with Unallocated space

If you’ve gotten Unallocated space by deleting or shrinking a drive in Server 2016 Disk Management, you can easily add this Unallocated space to C drive. All you need to do is clicking and dragging.

Download and install NIUBI Partition Editor, there is 20GB Unallocated space next to C: drive.

Unallocated created

Step 1: Right click C drive and select “Resize/Move Volume“. In the pop-up window, drag the right border rightwards to hold the Unallocated space.

Extend C drive

Extend C

Step 2: Click OK, C drive increased to 60GB by adding the 20GB Unallocated space. Click Apply on top left to execute, done.

C drive extended

If the Unallocated space is not next to C drive, you just need an additional step to move it:

Right click D and select “Resize/Move Volume”, in the pop-up window, drag middle position rightwards, and then the Unallocated space will be moved to behind C drive.

Move D drive

Follow step 1 and then you can add the Unallocated space into C drive easily.

Increase partition size by robbing free space

In most cases, there is no such Unallocated space, in this situation, you can increase C drive size by taking unused free space from other drives in the same disk.

Step 1: Right click volume D and select “Resize/Move Volume”.

Select Resize

Step 2: In the pop-up window, drag left border rightwards to take free space out from D.

Shrink d drive

Drag to shrink

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

Unallocated created

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

Extend C drive

Extend C

Step 4: Click Apply on top left to execute, done.

C drive extended

If there is not plenty of free space in partition D, you can get free space from any other volumes in the same disk.

Follow the steps in the video to increase partition size in Windows Server 2016:

(Recommend full screen by clicking the square at bottom right of this video)

In Summary

It is very easy to increase partition size on Windows Server 2016, you can extend a drive by merging existing Unallocated space or taking unused space out from other drives in the same disk.

Better than other tools, NIUBI Partition Editor integrated unique Roll-Back protection technology, which is able to roll back the server to the status before resizing partition automatically and rapidly. So Operating System and all data always keep intact even if power failure or other hardware issue occurred. This is the reason why it is recommended as the safest partition software for Windows server. Besides, it is 30% -300% faster than other tools because of its unique file-moving algorithm, saving much time especially when there are large amount of files in the partition or server memory is low.

If you use hardware arrays such as RAID 0, 1, 5, or VMware/Hyper-V, the steps to decrease and increase partition size are the same with above, nothing special.

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