Most of computer users tend to activate the Delete Volume feature in Disk Management to remove partitions. But sometimes, this feature becomes unavailable. Focusing on this issue, MiniTool not only explains why it happens but also shows the solutions according to different causes.

As an extension of the Microsoft Management Console, Disk Management allows us to manage the disk-based hardware recognized by Windows OS.

Deleting partition or volume via this utility is a common and easy operation to modify the numbers of the partitions on the hard drive.

However, sometimes this simple operation also makes you clumsy, as Delete Volume is greyed out in Disk Management.

Tip: You can use a free program MiniTool Partition Wizard to delete volume with ease. Apart from this feature, you also can use it to upgrade to a large hard drive without reinstalling Windows, migrate files to one storage device to another, and so on.

Why does this issue occur? Here are 4 cases, and their corresponding solutions will be introduced in detail. So, let’s see what the culprit is behind Disk Volume greyed out and how to remove it to make this feature available again.

Note: You should back up the important data stored in this volume before deleting it.

Case 1: The Volume Contains Operating System

The first situation for “Disk Management Delete Volume greyed out” is that the volume contains system as the following image shows.

Disk Management doesn’t allow to delete the volume containing system

In these 2 cases, you might want to delete system partition.

  1. There are two operating systems in computer, and you just want to delete one of them.
  2. You want to reinstall a new operating system to the original location but prefer to clean the previous operating system at first.

Although Disk Management doesn’t allow you to delete such volumes, it doesn’t mean that you can’t do anything to this volume.

In this situation, it is highly recommended to use the professional edition of MiniTool Partition Wizard or advanced editions, since the following steps will use Bootable Media feature of this software which cannot be supported by the free edition.

Tip: You can use this feature if you want to recover the lost data when your computer fails to boot.

The detailed steps are offered in the following content to help you to delete the volume containing system successfully.

Step 1: Prepare CD/DVD disc at first and insert it your computer.

Note: If you want to make a bootable USB flash drive, you should back up the important files in this device because the following steps will destroy such files.

Step 2: Buy MiniTool Partition Wizard Pro and launch it to get its main interface.

Step 3: Click Bootable Media in the main interface to create a bootable DVD/CD disc.

click Bootable Media in the main interface

Step 4: Select WinPE-based media with MiniTool plug-in in the pop-up window.

select WinPE-based media with MiniTool plug-in

Step 5: Click CD/DVD Writer as media destination to boot computer and then click Yes in the new pop-up window.

click CD/DVD Writer to as media destination

Step 6: Wait for some minutes when Bootable Media Builder is creating boot files on the CD/DVD disc. Finally, click Finish after successfully burning.

the working process of Bootable Media Builder

Step 7: Access MiniTool Partition Wizard Bootable by booting from burned MiniTool Partition Wizard Boot CD/DVD discs.

Step 8: After accessing the main interface of MiniTool Partition Wizard Bootable, please click the active system partition and click Delete Partition from the left panel. Or right-click this partition and choose Delete Partition.

click Delete Partition to delete the system partition

Note: In the MiniTool Partition Wizard Bootable, the driver letter for partition has been changed, you can use the Explore Partition feature of this program to figure out the partition you want to delete.

Step 9: Click Yes after getting a warning “deleting system partition may cause your computer to be unbootable” and then click the Apply button in the main interface.

get a warning after clicking Delete Partition to delete system partition

To reinstall another Windows operating system like Windows 10, you can click Detailed Steps and Instructions to Reinstall Windows 10.

I deleted my partition successfully via MiniTool Partition Wizard Bootable when the Delete Volume greyed out in Disk Management. If you also want to remove your system partition from your hard disk, you can try this program.Click to tweet

Case 2: The Volume Contains Page Files

The second reason that prevents you from deleting a one volume via Disk Management is that this volume contains page files.

Page files refer to a hidden system file with the extension name of .sys which is related to the virtual memory.

Why do such page files exist in volumes? When your computers RAM (random-access memory) are getting full, the operating system will automatically move some of the data from RAM to the pagefile.sys file on the hard drive. That’s why these files may appear in your volumes.

And when you want to delete such volumes, you will find that the “Disk Management Delete Volume” is greyed out.

In this situation, you need to disable file pages saved in the volume that you want to remove. To do that, please follow the steps below.

Step 1: Press the Windows icon and the R key on the keyboard simultaneously and input sysdm.cpl in the pop-up window. Click the OK button to run System Properties.

input sysdm.cpl in the pop-up window and click OK to open it

Step 2: In the System Properties window, move to the Advanced tab and then click the Settings button belonging to Performance.

set the performance of system properties in the pop-up window

Step 3: Navigate to the Advanced tab in the window as the following image shows and the click the Change button.

click Change to disable page files in the volume

Step 4: Select the volume you want to remove from the rectangle circled by the red line in the following picture at first, check No page file, click the Set button and the OK button in order.

set no page file for the volume that will be deleted

Note: Many choices are unavailable in the above image since each volume on my hard drive doesn’t have any page file. If you also get such picture by following the steps above, it means page files are not the barriers for deleting volume. Therefore, you should move to Case 2 directly.

Step 5: After disabling the pagefile, please run Disk Management again.

Step 6: Select the volume you want to delete again. The Delete Volume should be active, and you should click Delete Volume to delete the selected volume.

If this solution fails to fix “Delete Volume greyed out”, you need to keep reading and find other reasons that lead to this issue.

Case 3: Free Space Cannot Be Deleted in Extended Partition

If you want to delete the free space in the extended partition, the Delete Volume will be greyed out in Disk Management like the following picture shows:/strong>

the volume as Free space in extended partition cannot be deleted

Therefore, please look at the interface of Disk Management and check whether you are facing the similar situation as the image above shows.

The reason for this case is that when there are any logical drives left in the extended partition, you will have to delete them first, making all the disk space included becoming overall free space. At this time, you are able to remove the free space in Disk Management.

Step 1 Run Disk Management again if you have closed it. And then delete the logical partitions in the extended partition by right-clicking it and then choosing the Delete Volume option.

click Delete Volume to delete the selected logical partition

Repeat Step 1 if you have got more logical drives to delete. After deleting all the logical partitions on the extended partition, you should get a free space as the following image shows.

Step 2: To remove this free space, you should right-click Free Space and choose Delete Partition among the options.

click Delete Partition to remove free space

After carrying out Step 2, you can get the result as the following image shows.

no Free space in on the hard disk

Now you are able to create new partitions on the unallocated space, or you can use it to extend volume.


  1. If you regret deleting these logical partitions, you can restore these partitions with MiniTool Partition Wizard.
  2. If your intention is to turn the extended partition into another primary partition, you can rely on the Set Partition Primary feature of MiniTool Partition Wizard.

Related article: Fixed – No Free MBR Slots While Creating/Splitting Partition Using Partition Wizard

Case 4: Can’t Delete Partition on USB Drive

The fourth situation is that the second partition on the USB flash drive cannot be deleted, you can read the following recommended article to learn about this situation.

Fix Disk Management Is Unable to Delete Volume on USB Flash Drive
Fix Disk Management Is Unable to Delete Volume on USB Flash Drive

If you can't delete volume on USB flash drive in Disk Management utility, there are 2 solutions in this post. Choose the best one according to actual demands.

Read More

The top 4 cases for cannot delete partition in Disk Management and their responding solutions have been introduced in detail in the above content.

I know the reasons for Delete Volume greyed out in Disk Management and how to solve this problem easily with different solutions according to different situations.Click to tweet

Bottom Line

This article comes to an end. Please figure out the reason that causes you cannot remove volume on your hard drive via Disk Management. And then try the mentioned solutions to fix “Delete Volume greyed out”.

Hope this article can help you solve the problem successfully and you can do what you want to do after removing the volume.

If you have any difficulties in solving “Delete Volume greyed out” or any other suggestions on this topic, please leave a message below or contact with us via [email protected]. Thanks in advance.

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