How to Unpartition Hard Drive on Windows 10 And 11

You can delete all partition on the hard drive to make it back into a single unallocated space for unpartition hard drive on Windows 10. Here, 2 ways will be provided to delete partitions and offer step-by-step guide.


By Dervish / Updated on August 30, 2023

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Why need to unpartition hard drive?

What is unpartition hard drive? As the name suggests, unpartition hard drive refers to the process of removing existing partitions or volumes on the drive, effectively merging them back into a single unallocated space. If you want to add unallocated space to another hard drive, unpartition hard drive can do it. 

Usually, there are a few situations where unpartitioning a hard drive might be necessary or beneficial:

✦ Changing Disk Structure: Over time, you might have created multiple partitions on a hard drive to organize data or to install multiple operating systems. If your needs change, and you want to revert to a single partition setup, you would need to unpartition the drive.

✦ Simplification: Managing multiple partitions can become complex. If you find that you no longer need the organization provided by separate partitions, unpartitioning can simplify management.

✦ Reclaiming Space: When you have unused partitions, unpartitioning can help you free up space that was allocated to those partitions. This space can then be used for other purposes or to expand existing partitions.

✦ Data Privacy: If you plan to sell or give away a hard drive, unpartitioning and then securely erasing the drive can help ensure that no personal or sensitive data remains on it.

To unpartition hard drive on Windows 10, you can delete all partitions on the hard drive.

How to unpartition a hard drive on Windows 10

 If you don’t know how do I unpartition a hard drive in Windows 10? Don’t worry, here provides you two methods to do it.

▶ Method 1. Unpartition hard drive with Disk Management

Cause using Disk Management to unpartition hard drive will delete all the partition on it, so all the data will be deleted. If you have important data on the hard drive, you’d better back up data on the hard drive in advance. Then, follow the steps below:

1. Press "Windows" + "R" to open the "Run" dialog box. Then type "diskmgmt.msc" and press "Enter" to open Disk Management

2. In the Disk Management window, right-click the partition you want to delete and click "Delete Volume".  Follow this step to delete all partitions on the hard drive.

Delete Volume Disk Management

3. After that, you will see the partition as unallocated space. And now you can allocate the free space to the adjacent partition to extend it.


Tip: If the partition you want to delete is system partition, you will find that the Delete Volume greyed out, which means you cannot use Disk Management to delete a system partition.

▶ Method 2. Unpartition hard drive on Windows 10 more easily and no limit

Although Disk Management can delete all partitions, there are still many restricts. Fortunately, there is a third party freeware that can delete partitions on the hard drive easily.

Here I highly recommend AOMEI Partition Assistant Standard -a powerful disk partition manager that can not only delete all partitions on Windows 11/10/8/7 simply, but also wipe hard drive permanately. After unpartitioning the hard drive, the data on the disk will be deleted, and it cannot be restored by any data recovery software. Let’s see how it works.

If there is any important data on your hard drive, please back up your hard drive at first.

Download Freeware Win 11/10/8.1/8/7/XP
Secure Download

Step 1. Install and run it. Your partition information will be displayed on the main interface. Right-click the drive you want to unpartition and select “Delete All Partitions” to open the related dialog.

Delete All Partitions

Step 2. In the pop-up window, you can select the delete method. Click “OK” to continue.

Choose First Option

* If the disk you select contains a system partition, it will notice you that your computer won’t start the next time after you deleted your system partition. So, if you want to delete system partition, you’d better create a bootable USB stick in advance so that you can boot your computer from the bootable media.

◥ Delete all partitions:Just delete all partitions on a hard disk. (The data which has been deleted is recoverable if you choose option one in this situation.)
◥ Delete all partitions and wipe all data on the hard drive: Delete all partitions and wipe all data on the hard drive. If you choose this one, even data recovery software may not recover data on these partitions. Therefore, think twice before you decide to do this operation. Or, you can just make a backup of these data before deletion as mentioned above.

Step 3. After that, you can see the hard drive show as unallocated space. Click “Apply” > “Proceed” to complete the operation.


If you delete a primary partition, the empty you get is called unallocated space. If you delete a logical partition by Disk Management, the empty space is called free space. If you want to get unallocated space, you need to delete the free space again.
If the hard drive you want to unpartition is a solid state drive, you can try SSD Secure Erase to unpartition it. This function will help you reset your SSD to the factory settings and restore it to its peak performance.


Follow these simple steps, you can easily and effectively unpartition hard drive on Windows 10 or other Windows systems. In addition to delete all partitions, it also has many other useful functions like create/move/resize/format partition, convert MBR to GPT, clone disk, rebuild MBR and so on.

What's more, after upgrading to Professional Edition, you can allocate free space from one partition to another to extend it, or move installed applications to another drive to free up space as well.

Dervish · Staff Editor
Dervish is an English editor of AOMEI Technology; He is delicated to offering users easy and effecitve solutions for issuses related to disks and partitoins. In his spare time, he enjoy wathcning films, playing footable, traveling and so on.