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How to Partition External Hard Drive in Windows 10/8/7

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Jean updated on Jan 13, 2021 Partition Master | How-to Articles

How do I partition an external hard drive in Windows 10/8/7? Follow this page, you'll learn how to partition an external hard drive, making it available for storing files immediately, with 3 reliable disk management tools:

Also applies to: Partition a Hard Drive in Windows 10/8/7, partition HDD/SSD, USB hard drive without destroying data.

Why Do You Need to Partition An External Hard Drive

Computer users, especially most Windows users, are accustomed to creating 2-5 partitions on a hard drive for different purposes. Usually, a new hard drive is shipped with one primary C drive, so you need to make partitions like drive D, E, F, G on your own.

As for an external hard drive connected, you can also do it in the same way, making as many partitions as you need. Why do you need to partition an existing external or internal hard drive?

Here is a list of advantages that will explain why there are so many users want to partition an external hard drive:

  • Organize and save data properly: save working files and personal data into separate volumes.
  • Saving backup and daily files into different volumes.
  • Protect data security.
  • Improve external hard drive performance.

If you have the same needs, you'll need a reliable way to partition your external hard drive. We'll discuss and help you address this issue with 3 reliable partition tools in the next part.

How to Partition An External Hard Drive Without Losing Data

Applies to: Create and make partitions on an external hard drive in Windows 10/8/7.

Here, in this part, we'll introduce to you three reliable methods: EaseUS Partition Master, Windows Disk Management, and DiskPart. Each tool can help you effectively partition an external hard drive in Windows 10/8/7.

Pick one of the listed methods and follow the respective guide to make partitions on your disk now:

  1. #1. Partition External Hard Drive with EaseUS Partition Master - Easiest
  2. #2. Create Partition on External Hard Disk Using Disk Management - Medium
  3. #3. Make Partition in External Hard Disk via DiskPart - Hard

Note that the above three tools are listed from easy to hard. If you are not familiar with Disk Management or DiskPart, we suggest you turn to Method 1 and apply EaseUS partition manager software for help. Also, remember to back up your files from the external hard drive in advance.

Method 1. Partition External Hard Drive with EaseUS Partition Master

Works to: partition external hard drive in Windows 10/8/7/XP/Vista, and even Windows Servers.

Compared with Windows Disk Management and DiskPart, EaseUS Partition Master is the easiest way to partition an external hard drive. It enables users to resize, create, format, or delete partitions in only a few clicks. 

What's more, it offers a New Disk Guide feature to help you partition a new disk within only one click. Download, install, and activate this software on your computer, and let's see how to make partitions on your external hard disk now:

Tutorial 1: How to Partition A New External Hard Drive in One-Click

If you have a brand new external hard drive, connect it to your computer via a USB connection cable and follow to partition it immediately in only one click:

Step 1. Launch EaseUS Partition Master, a New Disk Guide Window will pop up.

One-click to partition external hard drive

Step 2. Click "Proceed" and hit "Execute Operation" to finish partitioning the target disk.

Execute operation

Tutorial 2: Partition A Used External Hard Drive in 3 Steps

If you have used an external hard drive for a while, and need to repartition it, you may follow the tutorial below to make partitions on it. This method also works to partition an existing hard drive. 

Video Tutorial:

Step-by-step Guide:

Step 1. Create unallocated space.

Install and launch EaseUS Partition Master. Right-click on a partition and select "Resize/Move" to get unallocated space. Drag the end of the partition to leave unallocated space. 

shrink a partition

Step 2. Create a partition.

Once you have got unallocated space, you can create a partition. On the main window, right-click on the unallocated space on your hard drive, SSD or external storage device and select "Create". Set the partition size, partition label, drive letter, file system, etc. for the new partition and click "OK" to continue.

create a partition on the hard drive

Step 3. Execute operations.

Click the "Execute Operation" button at the top corner and keep all changes by clicking "Apply".

click apply to start the partitioning process

Meanwhile, EaseUS also contains some advanced features to help you manage disk more properly, such as:

Some of these featured options are not available in Disk Management or DiskPart. 

Method 2. Create Partition on External Hard Disk Using Disk Management

Disk Management is a Windows built-in partition management tool in Windows 10/8/7. It provides users with basic features to partition a disk for free, including extend/shrink a volume, create a new one, change drive letters and paths, and convert a hard disk to dynamic, etc. 

Connect your external hard drive to PC and follow the steps to see how to partition an external hard drive on your own now.

Partition External Hard Drive in Windows 10:

Step 1. In Windows 10, right-click on "This PC" > Select "Manage" > Disk Management.

Step 2. To recreate a new partition, right-click on the unallocated space of your external hard drive and select "New Simple Volume".

Windows 10 disk management 2

If there you have a partition on the drive and want to create a second partition, right-click the external hard drive and select "Shrink Volume". 

Enter the amount of space you want to shrink in MB as shown below then click on the Shrink button. And repeat to create a new volume.

Windows 10 disk management 1

Step 3. Enter the New Simple Volume Wizard interface by clicking Next and specify volume size.

Windows 10 disk management

Step 4. Assign "Drive Letter or Path", then set the partition file system as NTFS. Click "Finish" to complete creating a new partition in Windows 10.

Windows 10 external hard drive partition

Partition external hard drive in Windows 8:

Step 1. Connect the external hard drive to Windows 8 PC, press Windows + R keys.

Step 2. Type diskmgmt.msc and hit Enter to open Disk Management.

Step 3. Right-click on the unallocated space of the external hard drive, and select "New Simple Volume".

Step 4. Enter the volume size in MB, click "Next" to continue.

Step 5. Set the drive letter and file system as NTFS, click "Finish".

To partition an external hard drive in Windows 7:

Step 1. Connect the external hard drive to Windows 7 computer and right-click "My Computer".

Step 2. Select "Manage" and click "Disk Management".

Step 3. Right-click on the unallocated space of your external hard drive, and select "New Simple Volume...".

Step 4. Enter the volume size, click "Next" to continue.

Step 5. Set the drive letter and file system as NTFS, click "Finish".

Method 3. Make Partition in External Hard Disk via DiskPart

As for some advanced users, they may feel like to use DiskPart to manage their hard disks. If you are one of them, connect the external hard drive to your computer, and follow the steps below to manage and make partitions in your external hard drive.

Step 1. Type cmd in the Windows Search box, right-click Command Prompt and select "Run as Administrator".

Step 2. Type diskpart in command prompt and hit Enter.

Step 3. Type commands and hit Enter each time to create and make new partitions on your new disk:

  • list disk
  • select disk 0 (Replace 0 with the disk number of your external hard drive.)
  • create partition primary size=*** (Note that the size need to be in MB.)
  • assign letter=H (Replace H with a new letter for your external hard drive.)
  • format fs=ntfs quick

Step 4. After this, type exit to close DiskPart.

Create new partition on external hard drive

After this, you can make use of the external hard drive to save files or transfer data without any limit.


This article primarily talks about how to partition an external hard drive, like an HDD/SSD/USB drive/Removable disk, in Windows 10/8/7. To do so, this page introduces three capable disk partitioning utilities for help: [1] EaseUS Partition Master Free; [2] Windows Disk Management; [3] DiskPart.

All of the recommended tools are capable of solving the problem of partitioning a new & old external hard drive into many blocks.

As for Windows beginners, EaseUS Partition Master should be the best for you to try. It's New Disk Guide feature simplifies the whole partition disk process into one click.

Partition External Hard Drive FAQs

If you have further questions in managing external hard drives, check out and find satisfying answers below:

1. How to remove partition on external hard drive windows 10?

To remove partition on external in Windows 10, you have three ways to try: 1. EaseUS Partition Master; 2. Windows 10 Disk Management; 3. Windows 10 Command Prompt.

For a free tool, you may try Disk Management for help:

  • In Windows 10, you can easily open the Disk Management console by right-clicking the Start button and choose "Disk Management option from the Start menu". 
  • In Disk Management, locate the external hard disk and the partition you want to remove. 
  • Right-click on the partition and select Delete Volume from the context menu.

For more details, you may follow How to Remove Partition on External Hard Drive in Windows 10 for help. 

2. How to format an external hard drive?

  • To format a new external hard drive: follow the steps on this page to partition the disk first and format it during the process.
  • To format a used external hard drive: Use File Explorer and right-click the external hard disk, select "Format" and set its file system as NTFS, then click "Start".

For more details, you may follow How to Format (External) Hard Drive in Windows 10 for help. 

3. How to fix unallocated external hard drive?

If your external hard drive suddenly becomes unallocated or shows up as unallocated in Windows 10/8/7 PC, you can try the following three steps:

Step 1. Recover data from unallocated space on the external hard drive.

Step 2. Create a new partition on the unallocated disk.

You may follow Repair Unallocated External Hard Drive without Losing Data for a step-by-step guide. 

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

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