How to Extend a Partition with Unallocated Disk Space in Windows Server 2012?

August 18, 2017

AOMEI Partition Assistant Server can help you add unallocated disk space to partition in Windows Sever 2012; it can assistant you to create new partition with unallocated space easily and effectively.

What is unallocated disk space?

As it’s name implies, unallocated disk space means the space that isn’t allocated to any partition; it is free logical space on the hard drive; it is unallowable to write any programs to this space. If you want to write applications to it, you have to extend a partition with the unallocated space or create a new partition based on this space.

Why need to extend partition with unallocated space?

When there is not enough space on a partition of a hard drive, many users would like to extend this partition with unallocated disk space. The reasons of increasing partition size with the unallocated space are concluded as follows:

In order to improve the operating speed: As times goes by, the C drive is filled with files, which will affect the running speed of machine. At this point, it is necessary to extend partition C with unallocated space for higher running speed.

In order to satisfy the demand of installing more applications: It is common that the hard drive is partitioned imperfectly at first and you may want to install more programs on the specified partition; but only to find that there is no enough space for you to do so. Therefore, you need to increase the size of that partition with unallocated space.

How to extend partition with unallocated space in Windows Server 2012?

Before figuring out how to extend partition with Windows Server 2012 unallocated disk space, you have to realize two cases of unallocated space position:

Case 1: There are multiple partitions on the hard drive and there is an unallocated space just right behind the partition that you want to extend.

Case 2: The hard drive owns multiple partitions and there is an unallocated space not right behind the partition that you plan to add unallocated partition to.

Increase partition size with unallocated space via Disk Management.

For case 1, it is possible to increase partition size with unallocated space via Disk Management.

Step 1: Press Windows+R, enter “diskmgmt.msc” in the box and press Enter.

Step 2: Right click the partition you want to extend (here is partition “E”) and choose “Extend Volume”. Then, click “Next”.

For case 1, it is obviously that partition can be extended with the unallocated space easily via Disk Management.

And for case 2, the option of “Extend Volume” is grayed out. The partition can’t be extended via Disk Management.

Can not Extend Partition

Thus, you have to turn to third party software to add unallocated space to the partition that you want to extend. 

Notice: If you stick to extend partition with unallocated space via Disk Management, you have to delete the partition behind partition E to get contiguous unallocated space and the data on the partition will be lost.

Increase partition size with unallocated space through AOMEI Partition Assistant

Although there is a great number of software in the market, AOMEI Partition Assistant definitely is one of best. As a great partition manager, it can help you to extend partition with unallocated space in Windows Server 2012. To add unallocated partition to the space that you intend to extend with AOMEI Partition Assistant Server, you must install it and launch it.

Before increasing partition with unallocated space with AOMIE Partition Assistant, you can back up the whole disk just in case for wrong operation.

Detailed steps for how to extend partition with unallocated disk space in Windows 2012 are as follows:

Step 1:Right click the partition that you want to extend and select “Merge Partition”.

Merge-Partitions

Step 2:Tick the box before “unallocated”. Then, click “OK”

Add Unallocated Space to Partition

Step 3: Confirm the pending operation and click “Apply”.

Perform Extend Partition

What else can you do with Windows Server 2012 unallocated disk space via AOMEI Partition Assistant Server? 

With the help of AOMEI Partition Assistant, non-contiguous unallocated space can be used to extend partition in Windows Server 2012 effortlessly. In fact, apart from being used to extend partition, unallocated space can be used to create new partition in Windows Server 2012 as well. And AOMEI Partition Assistant owns this function. The process of creating partition with unallocated space via AOMIE Partition Assistant will be briefly introduced in following part:

  1. Launch AOMEI Partition Assistant. Right click the unallocated space and Choose “Create Partition”.

  2. Determine the size of the new partition and assign drive letter, file system. If the disk is SSD, tick the box before “SSD partition alignment” to get better performance.

  3. Check the pending operation and click “Apply” to implement this task.

Notice:

  • When your disk is MBR over 2TB, you can’t create new partition with the rest unallocated space beyond 2 TB on the MBR hard drive as it only supports space to use up to 2TB.

  • When your disk is MBR with 4 primary partitions or three partitions and one extended partition, new partition is unable to be created with unallocated space.

To take full advantage of unallocated disk space, you can convert MBR to GPT.

All in all, AOMEI Partition Assistant can help you to make full use of Windows Server 2012 unallocated disk space without efforts. As a comprehensive disk partition tool, it owns various features such as split partition, convert file system to Fat32, clone hard drive to smaller hard drive. What’s more, apart from Windows Server 2012, AOMEI Partition also supports Windows Server 2016/2008 R2/2008/2003. Applying AOMEI Partition Assistant to managing disk, you can gain great experience.