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How to Repartition a Hard Drive on Windows 10/11 [Step-by-Step]

Are you looking for a way to partition your computer's hard drive? Learn how to repartition a hard drive in this comprehensive guide.

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Updated on Apr 22, 2024

The demand for larger capacities and increased efficiency has never been greater in digital storage. Understanding how to repartition a hard drive can be valuable for additional storage or optimizing your system's performance:

By rearranging data allocation, you can create separate partitions for different purposes. These include separating the operating system from personal files, creating dedicated backup storage, or organizing data for dual-booting multiple operating systems. EaseUS offers a comprehensive guide on how to repartition a hard drive.

What Does Repartition Mean?

Repartitioning involves dividing the storage space of a hard drive into multiple sections or partitions. These partitions act as separate units within the drive, allowing for better organization and management of data. Each partition acts as a distinct unit within the drive, appearing separate entities to the operating system and the user.

By running a hard disk partition, you can allocate storage space for different purposes, creating logical divisions that help organize and manage your data more efficiently. Each partition can be treated as an independent storage unit with its own file system, permissions, and allocation methods. This separation provides numerous advantages, such as improved data organization, enhanced system performance, and increased flexibility in managing your digital content.

Next, we will continue to introduce more ways to repartition a hard drive. If you think this guide is helpful for you, click the social buttons and share it with others in need.


How to Repartition a Hard Drive

Now that we have a solid understanding of repartitioning and its benefits, it's time to dive into the practical aspects. This section will provide you with comprehensive methods to repartition a hard drive. Given below are the top three ways to repartitioning a hard drive:


🏅EaseUS Partition Master

🥈Disk Management



Create/delete/shrink/extend/merge partition

create/shrink/delete partition create/shrink/delete partition
🧑‍💻Difficulty Simple  Medium Hard
🧑‍🤝‍🧑Suitable Users For beginners For experienced  For expertise

As you can see, EaseUS Partition Master has more features and is suitable for more people. If you are unfamiliar with computers or command prompts, the third-party tool is a nice choice.

Repartition Hard Drives via Third- Party Tool

Repartitioning a hard drive can be accomplished using various third-party software tools, and one popular choice is EaseUS Partition Master. This powerful and user-friendly partition management software provides comprehensive features to assist you in easily repartitioning your hard drive. It can easily create, extend, delete, and resize partitions:

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Repartitioning your hard drives becomes a breeze with EaseUS Partition Master. Here is how to repartition a hard drive within minutes:

Extend Partition:

Option 1. Extend System C drive with unallocated space

  1. 1. Right-click on the System C: drive and select "Resize/Move".
  2. 2. Drag the system partition end into the unallocated space so to add it to the C: drive. And click "OK". 
  3. 3. Click "Execute Task" and "Apply" to execute the operations and extend the C drive.

Option 2. Extend System C drive without unallocated space

  1. 1. Right-click a big partition with enough free space on the system disk, select "Allocate Space".
  2. 2. Select the system drive at the Allocate Space From (*) To section, and drag the end of System C drive into the unallocated space. Click "OK" to confirm.
  3. 3. Click "Execute Task", it will list the pending operations, and click "Apply" to save the changes and extend the C drive.

0:00-0:26 Extend System Drive with Unallocated Space; 0:27-0:58 Extend System Drive without Unallocated Space.

Resize Partition:

Step 1: Locate and select the target drive/partition

Launch EaseUS Partition Master and go to Partition Manager, select the target drive/partition to adjust its size, right-click on it and choose "Resize/Move".

choose the partition

Step 2: Resize or move the partition

1.To shrink the partition, simply drag one of its ends to free up unallocated space. Once done, click "OK". 

drag the mouse leftwards to resize partition

2. To extend the partition, make sure that there is unallocated space aside (if there isn't, follow the above steps to create some). In the same way, drag your mouse into the unallocated space. Click "OK".

drag the mouse leftwards to resize partition

3. To move a partition position, you need to leave unallocated space next to the target partition. If no, free up some unallocated space first.

Right-click the target partition, select "Reize/Move". Then drag the whole partition leftward or rightward to adjust its position. Click "OK" to confirm. 

drag the mouse leftwards to resize partition

Step 3: Confirm the result and apply changes

At this step, you will see the new disk partition information & diagram.

disk partition information after resizing

To save changes, click the "Execute Task" button and then "Apply".

apply changes to the partition

For more information about managing hard drive partitions:

Repartition Hard Drives via Disk Management

You can use Windows's built-in Disk Management tool to accomplish hard drive repartitioning. With its basic partition management capabilities, Disk Management eliminates the need for third-party software. Below, you will find a step-by-step guide on how to repartition a hard drive using Disk Management in Windows. Just follow these instructions to complete the process successfully:

Step 1: To access Disk Management, press the "Win + X" key and choose "Disk Management" from the Power User menu. Now identify the hard drive you wish to repartition from the list.

Step 2: To create unallocated space for a new partition, you'll need to shrink an existing partition. Right-click the target partition you want to shrink and choose "Shrink Volume." Now provide the size you want the volume to shrink. It cannot be more than half of the volume.


Step 3: You'll have unallocated space after shrinking the partition. Right-click the target space and select "New Simple Volume" from the context menu.

new simple volume

Step 4: The New Simple Volume Wizard will guide you. Follow the prompts to specify the size of the new partition, assign a drive letter or mount point, and format the partition with a desired file system (e.g., NTFS).

create partition

Note: If the New Simple Volume greyed out, it may be caused by the MBR limitation or other reasons. In this situation, you can resort to EaseUS Partition Master for fixes.

Repartition Hard Drives via CMD

Command Prompt or CMD is another way to repartition a hard drive. Although this method requires some technical know-how, it offers a command-line approach to repartitioning your hard drive. It provides greater control and flexibility for advanced users.

Remember that repartitioning a hard drive using CMD involves executing specific commands and requires administrator privileges. Learn how to repartition a hard drive by using these simplified steps:

Step 1: To begin, search for Command Prompt using the Windows search bar. After finding it, make sure to run it as an administrator. Once the CMD interface opens, type "diskpart" and press Enter. This will launch the Diskpart utility.

Step 2: Now run the "list volume" command to get a detailed list of all the volumes available on your system. Afterward, choose the specific volume you want to shrink using the "select volume X" command.

Step 3: Shrink the volume using the "shrink desired = V" command, where V represents the volume you want to shrink. Afterward, use the "create volume simple size = V" to create the new volume on your hard disk.

repartition hard drive cmd

CMD is a powerful tool for managing your hard drives, if you want to learn more function about it, click the blue buttons for more information.

When Do We Need to Repartition a Hard Drive?

Repartitioning a hard drive can be a helpful solution in various scenarios where the existing partition layout no longer meets your needs. Outlined below are several scenarios in which you may need to contemplate repartitioning your hard drive:

  • Performance Optimization: Creating separate partitions for the operating system and frequently accessed files can improve SSD read/write speeds and reduce disk fragmentation. Additionally, repartitioning can ensure that system-related tasks, such as virtual memory or temporary file storage, have dedicated partitions for efficient operation.
  • Insufficient Storage Space: By resizing existing partitions or creating new ones, you can allocate more space to specific drives where you need it the most.
  • Converting Disk Type: Dynamic disks offer advanced features like creating spanned or mirrored volumes that require repartitioning. Conversely, repartitioning is necessary to remove the dynamic disk configuration if you want to convert a dynamic disk back to a basic disk.
  • Resolving Partition-related Issues: Repartitioning can address partition-related issues, such as partition corruption, file system errors, or incompatible partition formats. 


Learning how to partition a hard drive is a valuable technique. It allows you to optimize storage space, organize data, and enhance system performance. This article explored different repartitioning methods, including Disk Management and the Command Prompt (CMD). However, regarding ease of use, versatility, and advanced features, EaseUS Partition Master stands out as the best choice for repartitioning your hard drive.

EaseUS Partition Master offers a user-friendly interface that simplifies the repartitioning process, making it accessible to non-technical and experienced users. Its key features, such as extending system partitions, merging partitions, wiping partitions, and checking file system errors, provide comprehensive partition management capabilities.

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FAQs About How to Repartition a Hard Drive

It is natural to have questions and concerns when performing operations such as repartitioning on your hard drive. In this section, we will address some frequently asked questions about how to repartition a hard drive:

1. Can I repartition the hard drive without losing data?

Yes, it is possible to repartition a hard drive without losing your data. To do that, you will need a reliable and powerful tool like EaseUS Partition Master. This tool can safely repartition your computer's hard drives without data loss. Moreover, this tool is available for free to download and use.

2. How to un-partition the hard drive?

To un-partition a hard drive means to remove the existing partitions and revert the drive to a single partition or unallocated space. Here are the general steps to un-partition a hard drive:

Step 1: Open Disk Management and locate the drive you want to un-partition. Right-click on each partition on the drive and select "Delete Volume."

Step 2: Confirm the deletion when prompted. Repeat this step for all partitions on the drive. Once all partitions are deleted, right-click the unallocated space and select "New Simple Volume."

3. How to partition a 1TB hard drive?

Partitioning a 1TB hard drive involves dividing the storage space into multiple partitions. Here's a general guide on how to partition a 1TB hard drive:

Step 1: After opening Disk Management, select the 1TB drive. Now right-click on the partition, select "Shrink Volume," and specify the desired size for the new partition.

Step 2: Right-click the target space and select "New Simple Volume." Follow the prompts to specify the size, assign a drive letter, and format the new partition.

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About the Author

Updated by Sherly

Sherly joined EaseUS in 2022 and she has always loved writing articles and enjoys the fun they bring. She receives professional training here, focusing on product performance and other relative knowledge. She has written over 200 articles to help people overcome computing issues.

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Written by Cici

Cici is the junior editor of the writing team of EaseUS. She accepted the systematic training on computers at EaseUS for over one year. Now, she wrote a lot of professional articles to help people resolve the issues of hard drive corruption, computer boot errors, and disk partition problems.

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  • 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. I also think the overall look and feel of EaseUS Partition Master Free makes whatever you're doing with your computer's partitions easy.

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  • Partition Master Free can Resize, Move, Merge, Migrate, and Copy disks or partitions; convert to local, change label, defragment, check and explore partition; and much more. A premium upgrade adds free tech support and the ability to resize dynamic volumes.

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  • It won't hot image your drives or align them, but since it's coupled with a partition manager, it allows you do perform many tasks at once, instead of just cloning drives. You can move partitions around, resize them, defragment, and more, along with the other tools you'd expect from a cloning tool.

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