Extend Volume Greyed Out? Fix Can't Extend Volume in Windows [New]

Brithny updated on Sep 30, 2020 to Partition Master | How-to Articles

Are you having this error that the Extend Volume greyed out while trying to increase C drive or other partition space on Windows 10? On this page, we'll discuss why is the Extend Volume Option greyed out and how to fix the "can't extend volume" error on Windows 10/8/7, and even Windows Server computers.

Check out and find the best solutions to enable extend volume in all your hard drive partitions now:

PAGE CONTENT:
Why Is Extend Volume Grayed Out
Your Most Reliable Tool for Extending Volume
Method 1. Fix Can't Extend Volume Error without Unallocated Space
Method 2. Fix Can't Extend Volume Error with No Adjacent Unallocated Space
Method 3. Fix Extend Volume Greyed Out on FAT or Other Format Partition
Method 4. Fix Can't Extend Primary Volume with Space on Extended Partition or Vice Versa
Method 5. Fix Extend Volume Option Greyed Out in MBR 2TB Partition

Can't Extend Partition, Extend Volume Grayed Out

"Hi there, do you know how to fix the problem that Extends Volume option is greyed out in Disk Management? I planned to expand my system C drive to speed up the computer with Windows 10. I opened the Disk Management tool, deleted an extended partition to leave unallocated space so to extend C drive? 

But it won't allow me to do so. Why? The Extend Volume option is greyed out, and how can I fix this issue?"

Cannot extend volume partition.

Are you having the same issue on your PC that the Disk Management tool won't allow you to extend volume? Relax! Reading this tutorial, you will know why is Extend Volume grayed out. Besides, effective solutions are available right here to help you enable extend volume so as to extend partitions in Windows 10/8/7 for free now. How? Let's see.

Prior note: It's impossible to extend or add partition space with free space on a second basic disk. Therefore, please make sure that the free space or unallocated space and the volume which you want to extend are on the same disk. 

Why Is Extend Volume Grayed Out

If you can't extend volume, like cannot extend volume in C drive, don't worry. Open Windows Disk Management, check the state of your disk partition, and the listed reasons below. You'll find why is the Extend Volume option greyed out on your computer:

  • There is no unallocated space on your hard drive.
  • There is no contiguous unallocated space or free space behind the partition you want to extend. 
  • Windows can't extend is a FAT or other format partition.

The Extend Volume option in Disk Management only works to a RAW or NTFS partition. You can't extend FAT or other format partition on Windows PC.

  • Windows can't extend a primary partition with unallocated space in an extended partition, or vice versa.
  • The partition capacity as reached the 2TB limit on MBR disk.

Now that we know why is Extend Volume grayed out, so how to enable extend volume or increase partition under these circumstances? Here, we've picked up * reliable methods for you to try and apply to extend partition for free. 

Your Most Reliable Tool for Extending Volume

As we've mentioned above, among the reasons why you can't extend volume, Windows limitation is the major reason. Windows disk management cannot extend a specific partition in situations. 

In order to help you out of the "Extend Volume Greyed Out" error and successfully increase partition size, we'd like to recommend you try a reliable tool for extending volume - EaseUS Partition Master.

Download Now

 Windows 10 is supported

It's Resize/Move and Allocate Space feature will effectively fix all the issues, helping you effectively extend volume on Windows 10/8/7:

If some of you still prefer to use Disk Management to fix this error, you may try Method 1 to enable Extend Volume and increase partition space now.

Method 1. Fix Can't Extend Volume Error without Unallocated Space 

When your hard drive doesn't have unallocated space, you can't extend a volume. You can either apply Disk Management or apply EaseUS partition manager for help.

You can follow either way to enlarge your target partition on Windows 10/8/7 now.

#1. Make Unallocated Space and Extend Volume in Disk Management

Note that if you can't extend C drive space, you can also enable Extend Volume in C drive with the same steps below: 

Step 1. Make Free or Unallocated Space behind Target Volume 

If you don't have free space or unallocated space on the computer drive, you must first delete an empty or useless partition, or shrink a partition to leave free/unallocated space next to the target volume.

  1. 1. Press Windows + X keys, click "Disk Management".
  2. 2. Right-click an empty partition next to the target volume, select "Delete Volume". Click "OK".

Delete volume to free up space

  • 3. You can also right-click a neighbor partition that has enough free space, select "Shrink volume".
  • 4. Specify the amount of space to shrink, click "Shrink" and "OK" to confirm.

Shrink volume to free up space

You are now good to go and follow the steps below to enlarge a hard drive partition without the "can't extend volume" error any longer.

Step 2. Enable Extend Volume, Increase Partition Size

  1. 1. In Disk Management, right-click the target partition that you want to extend.
  2. 2. Select "Extend Volume" and adjust the size that you want to add to the target volume.
  3. 3. Click "OK" to confirm.

Extend Volume after leaving up enough unallocated space

#2. Fix Can't Extend Volume with No Unallocated Space via EaseUS Partition Master

EaseUS Partition Master with its Allocate Space feature enables you to flexibly move free space from other partitions to extend a target volume without shrinking or deleting any volumes.

Download Now

 Windows 10 is supported

The most important thing is that no data loss will occur. Let's see how to extend a volume even when there is no unallocated space on the drive:

Step 1. Locate the Target Partition

To start extending partition, you should first launch EaseUS Partition Master and locate the target partition which you would like to extend.

Step 2. Extend the Target Partition

1. Right-click on the target partition which you would like to extend and select "Resize/Move".

Select target partition to extend

2. Drag the partition panel rightward or leftward to add unallocated space into your current partition and click "OK" to confirm.

choose another drive to allocate space

3. If there is no or not enough unallocated space on your disk, use the advanced partition resizing function to directly allocate free space from other partitions to the target drive without deleting or formatting.

Find the "Allocate XX space from" option, then click "Select partition". Choose the partition from which you want to allocate space. Drag the partition panel rightward or leftward to resize the partition you want to extend. Then click "OK" to confirm.

choose another drive to allocate space

Step 3. Execute Operations to Extend Partition

Click the "Execute Operation" button and click "Apply" to keep all the changes. 

finish extending partition

Note that this feature is only available in EaseUS Partition Master Pro Edition.

If there is no unallocated space but you want to extend volume for free on your disk, you'll need to shrink partitions to make unallocated space, and then expand the partition using EaseUS Partition Master Free

Method 2. Fix Can't Extend Volume Error with No Adjacent Unallocated Space

If you have unallocated space on your disk but it's not next to your target volume, the Extend Volume option will display as greyed out in Disk Management. You can use EaseUS Partition Master to extend partition with its Resize/Move feature:

Now, free download and install EaseUS Partition Master on your PC. Then follow the below steps to fix can't extend volume problem.

Steps to Extend Volume with EaseUS Partition Master:

Step 1. Locate the Target Partition

To start extending partition, you should first launch EaseUS Partition Master and locate the target partition which you would like to extend.

Step 2. Extend the Target Partition

1. Right-click on the target partition which you would like to extend and select "Resize/Move".

Select target partition to extend

2. Drag the partition panel rightward or leftward to add unallocated space into your current partition and click "OK" to confirm.

choose another drive to allocate space

3. If there is no or not enough unallocated space on your disk, use the advanced partition resizing function to directly allocate free space from other partitions to the target drive without deleting or formatting.

Find the "Allocate XX space from" option, then click "Select partition". Choose the partition from which you want to allocate space. Drag the partition panel rightward or leftward to resize the partition you want to extend. Then click "OK" to confirm.

choose another drive to allocate space

Step 3. Execute Operations to Extend Partition

Click the "Execute Operation" button and click "Apply" to keep all the changes. 

finish extending partition

This software also supports you to free extend or increase partition size and fixes New Simple Volume Greyed Out the issue with ease. 

Method 3. Fix Extend Volume Greyed Out on FAT or Other Format Partition

Due to the Windows limitation, you can't directly use Disk Management to extend FAT, exFAT, EXT partitions. Here you have two options o fix this error:

  1. #1. Extend FAT or Other Format Partition Using EaseUS Partition Master

EaseUS Partition Master breaks the limit in Windows PC, and you can directly follow steps in Method 1 or Method 2 to extend your target partition with ease.

  1. #2. Convert FAT to NTFS and Extend Partition in Disk Management

To convert FAT partition to NTFS, you'll need to format or delete the partition, which will cause file loss. Therefore, we don't recommend you try this method. It's time-consuming and risky.

Method 4. Fix Can't Extend Primary Volume with Space on Extended Partition or Vice Versa

Windows also doesn't allow you to extend a primary partition with unallocated space in an extended partition, so it is to extend a logical partition with space in a primary partition. 

Therefore, to fix this issue and extend a volume, you'll need to turn to a third-party partition manager software for help. EaseUS Partition Master can help. 

Download Now

 Windows 10 is supported

Video Tutorial: Extend and Partition Hard Drive

The following video tutorial shows how to partition a hard drive on Windows 10 and you can learn how to extend volume in this video:

Method 5. Fix Extend Volume Option Greyed Out in MBR 2TB Partition

This is a rare case but happens sometimes on an MBR partition. If you create a single volume that reaches 2TB capacity, you can't continue extending the partition. Then the Extend Volume Option will grey out.

In this case, you can convert the MBR disk to GPT disk to break the limit. We don't suggest you use Disk Management to execute the operation as it requires to delete all partitions to convert a disk. 

EaseUS Partition Master with its disk conversion feature will do the work. You may refer to Convert MBR to GPT for help.

Conclusion

On this page, we offered 6 reliable methods to help you fix the "Extend Volume greyed out" error and extend partitions successfully no matter whether you have free or unallocated space on your computer hard drive.

If you prefer a reliable & free tool to extend partition, EaseUS Partition Master Free Edition is more reliable. As it doesn't require deleting partition even if you don't have unallocated space. Also, no data loss will occur by extending volume using this free partition tool.

Download Now

 Windows 10 is supported

Was This Page Helpful?

 
 
 

Frequently Asked Questions

Why Choose EaseUS Partition Master?

"I've used Partition Master Professional many times to create, delete, format, move, rename, and resize partitions."PCWorld

"Partitioning tools have come a very long since the days of complicated command line utilities and EASEUS Partition Master is one of the most advanced programs available."TECH ADVISOR

"I love that the changes you make with EaseUS Partition Master Free aren't immediately applied to the disks. It makes it way easier to play out what will happen after you've made all the changes."Lifewire

Will the "Migrate OS" feature transfer the Windows system files only or the whole C drive?

To ensure that the migrated system will boot normally, the Migrate OS feature will transfer all the files in the system and the boot partitions. Generally, the boot partition is the C drive so the transfer will include all the files in C.

Does EaseUS Partition Master license apply to multiple computers?

The license of Partition Master Professional and Server editions can be used on 1 computer only, while that for for the Technician and Unlimited editions can be used on multiple machines.

What is the difference between EaseUS Partition Master Trial version and the Free version?

Free is for home users only, with most basic functions available such as partition resize and clone. While trial can help you understand how this product works and test what a full license can do on a business or server OS machine.

Will it cause any data loss after resizing the partition in EaseUS Partition Master?

Generally, it will not cause any data loss or boot issue by resizing a partition. However, in order to protect your data, we suggest that you backup the partition before resizing, in case of any unexpected situations such as power outages, computer hardware failures, etc. You can use EaseUS Todo Backup to backup the partition and its trial version is fully functioned for 30 days.

What should I prepare before resizing the partition?

On the partition that is going to be operated, there might be some files being occupied by other programs. To ensure a successful operation, we suggest that you close all the unnecessary software before resizing that partition. Otherwise, EaseUS Partition Master will detect the partition being locked by the other software and require a reboot to resize the partition under boot mode.

About EaseUS Partition Master

All-round disk & partition management software for personal and commercial use. Let it manage your storage drive: resize, format, delete, clone, convert, etc.

Video Tutorial

How to Partititon a Hard Drive on Windows 10/8/7