The Ways to Extend Volume in Windows 10

September 28, 2015

Disk Management extend volume has some limitations. Learn how to extend volume in Windows 10 with the third party partition software AOMEI Partition Assistant. Sometimes you have to resize/merge partition for managing your disk better.

About Extend Volume in Windows 10

Microsoft released the latest operating system Windows 10. It is a kind of revolution compared with the previous versions. However, the Disk Management of Windows 10 still has many limitations. For example, extending volume in Windows 10 may not work in many situations.

Many users may find out that Windows 10 system volume is bigger than Windows 8/8.1 or Windows 7 after upgrading their old Windows OS to Windows 10, and they have to extend system partition for Windows 10 so that the system can run normally. People cannot manage the disk perfectly at the first time. They may find that the D: partition is not enough, or the E: partition is not enough with the using of computer. Well, what should you do if you find the volume is not enough? Extend volume could be the most effective way.

However, in Windows 10, if there isn’t any unallocated space behind the partition which you want to extend, the Extend Volume of Disk Management will be grayed out, so that you cannot using it to extend the volume.

Extend Volume Grayed Out

So, Windows 10 Disk Management can only extend the volume which has an unallocated space behind and neighbor to it.

Extend Volume Normal

What if there isn’t unallocated space behind the partition you want to extend? Clearly the Disk Management is helpless.

How to extend Windows 10 volume?

To extend volume for Windows 10 without unallocated space behind it, you have to use a third-party software. But many software must be payed for it. Considering the price and the functions, here we highly recommend you AOMEI Partition Assistant Pro, a powerful software for managing disk, which can extend partition for Windows 10/8.8/8/7/Vista/XP at least in three different ways without losing data. You can also download the free edition AOMEI Partition Assistant Standard.

Before you do, please use AOMEI Backupper to backup all the important data to protect its safe from accident.

Then, install and launch AOMEI Partition Assistant Pro. You will see the main interface of it.

Main Interface

1.The Extend Partition Wizard

AOMEI Partition Assistant has a function called Extend Partition Wizard, which is specially for extending volume. You can see it at the left panel. Click it to open the wizard.

Extend Partition Wizard

There are two options. One is for extending system partition and another one is for extending any partition from any hard disk. Here you can select anyone as you want.

Select Disk

Then, it will remind you that it can extend NTFS partition without losing data and restarting computer. Click Next, it will move to the window where you can select the partition to shrink for releasing extra free space, or if you don’t want to shrink any other partitions, you can click “here” in the window to extend the partition by using unallocated spaces on the disks.

Click Here

Just drag the bar to the right side, you will extend the partition with the unallocated space. Click Next.

Extend Volume

Here you can preview and confirm those operations. Click Proceed to execute it.


2. Extend volume with Merge Partitions

AOMEI Partition Assistant is a great powerful disk manager. To extend partition, the other directly way is to use the feature Merge Partition. Right click the volume you want to extend, select Merge Partitions.

Merge Partitions

It will pop-out a window like the following picture. You can merge two adjacent partitions into a bigger one, or merge unallocated disk space with a partition. Select the partitions and click OK.

Merge Partitions

You will see that the D: partition and the unallocated space and C: are merged into one partition. The C: drive is bigger than before. Click Apply to submit all the steps. When the progress finishes, you have already finished the job.

Click Apply

3. Extend volume with Resize Partition

You can also use the Resize Partition to extend volume. You have to know that resize partition needs unallocated space adjacent to the partition. For example, extending D: partition. Right click D: partition, selectResize Partition.

Resize Partition

You can drag the bar to the right side to extend the volume, because there is an unallocated volume behind D: drive. If there is an unallocated space in front of D:, you can also drag the bar at the left side to extend D: drive. Click OK.

Move and Resize Partition

You can see that the D: partition is bigger than before. Don’t forget clicking Apply to submit the steps.


In addition, no matter whether there is unallocated space adjacent to the volume you want to extend, you can use AOMEI Partition Assistant to extend it in free. If there isn’t any unallocated space nearby, you can move partition or split partition to create a condition to extend volume for Windows 10.