Windows Server 2012 R2 Extend Volume Grayed out in Disk Management

If you are Windows Server 2012 R2 user, you may know that it allows you to extend volume and shrink volume under Disk Management. It is often quite easy to extend a partition with Windows Server 2012 R2 Disk Management, but most of time, you may find that it is not so easy as you think. In most cases, you may find that the "Extend Volume" shows grayed out under Disk Management when you attempt to extend a partition on Windows Server 2012 R2. Why? And how can you resolve the problem? This page will tell how to extend a partition when "Extend Volume" is grayed out in Disk Management on Windows 2012 R2.

How to Extend Volume with Windows 2012 R2 Disk Management

The first thing you should do is to access the Disk Management in Windows 2012 R2. You need to right click the "Windows" icon and then click "Disk Management" to access the Disk Management on Server 2012 R2.

If there is enough free space on other partition on the same hard disk, you can follow the guide below to extend partition on Windows 2012 R2 Disk Management. Take C drive as an example, you can follow the steps below if you want to extend C drive on Windows 2012 R2:

Step1. Open D drive and move all important data from this partition to another one or external hard drive.

Step2. Right click D drive and select "Delete Volume" option and then follow the wizard to delete the D partition.

Step3. You can see an unallocated volume showing behind C drive after deleting D partition. Now, right click C drive and click "Extend Volume" option.

Step4. Enter the amount of space you want to add to C drive and then follow the wizard to extend C partition.

If you want to extend any other partition on Windows Server 2012 R2, you can also follow the steps above. The difference is that you must delete the partition behind the volume that you want to extend if you want to successfully add the unallocated space to the partition you need to extend.

Extend Volume Grayed out in Windows Server 2012 R2 Disk Management

Usually, the extend volume shows grayed out in following situations:

1. There is no unallocated space on the same hard disk

2. The unallocated space is not contiguous to the partition you want to extend

If there is no unallocated space, it is easy to get some by delete or shrink partition. Many people like to shrink partition with Windows 2012 R2 Disk Management because this solution does not cause any data loss. However, you cannot create unallocated volume which shows adjacent behind the partition you want to extend by shrinking partition. Most of time, the extend volume is grayed out under Disk Management since the unallocated space is not adjacent to the partition you need to expand.

Partition Software for Extend Volume Not Work Problem on Windows 2012 R2

What can you do when you are unable to extend volume with Windows 2012 R2 Disk Management? In this situation, you can use partition software for Windows Server 2012 R2 to extend disk volume.
Before you can extend any volume, you should do following things first of all:

1. Check if there is existing partition which shows as unallocated volume under Disk Management

2. If there is no existing unallocated volume, you should check if there is enough free space on any other partition on the same hard disk on Windows Server 2012 R2

Now, please pay attention: You cannot extend any volume if there is no free space on any of partition on the same hard disk on Windows 2012 R2.

IM-Magic Partition Resizer Server is able to shrink partition, move partition and extend partition, so you can use it to extend volume size when Disk Management failed to extend C drive or other partition in Windows 2012 R2 since there is not contiguous unallocated space.

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