How to dual boot Windows 10 with Windows 8 or 7?

Tracy King updated on Oct 22, 2020 to Partition Master | How-to Articles

Most computers ship with a single operating system, but it's possible to have multiple operating systems installed on a single device. Having two operating systems installed and choosing between them at boot time. This process is known as "dual-booting." If you like to try Windows 10 but don't want to give up current Windows 8 or 7, you can install two operating systems on your computer. And this page will tell you how.

Keep reading and check more on how to dual boot Windows 10 with Windows 8 or 7.

Windows 10 desktop

How to Dual Boot Windows on the Computer

When dual booting a computer, it would be better to install the different systems in two separate partitions. If you don't have an external hard drive, you can create a partition on your computer for Windows installation. Here we will introduce how to create a partition on the hard disk first, then show you how to install Windows 10 on the newly created partition.

Part 1. Create a Partition for Windows 10 installation

The easiest and safest way to dual boot is to buy and install a new hard drive for the new operating system on a computer. But if you have a large enough hard disk, you can also repartition the hard disk to make space for the new Windows installation. 

To make it easy, we recommend you to choose the free EaseUS Partition Master to repartition your Windows 8 or 7 hard disk.

EaseUS Partition Master is a professional partition management tool that enables users to create, resize, clone, move, merge, and format partitions. This tool is trusted by over 10 million users for more than 10 years and works well on Windows 10/8/7/Vista/XP.

Now download EaseUS Partition Master for free and follow the guide below to create a dual boot partition.

Download Now

 Windows 10 is supported

On EaseUS Partition Master, right-click on a partition, for example, Partition E, and select Resize/Move. Drag the left border of Partition E, and shrink its size to 100GB to make 30GB free space to Windows 10 system partition (Windows 10 installation requires at least 16GB partition).

shrink partition


Step 1: Launch EaseUS Partition Master

On the main window, right-click on the unallocated space on your hard drive or external storage device and select "Create".

Create partition on unallocated space

Step 2: Adjust the new partition size, file system, label, etc.

Set the size, partition label, drive letter, file system, etc. for the new partition and click "OK" to continue.

Set up new partition

Step 3: Confirm to create a new partition

Click on the "Execute Operation" button and confirm to create a new partition by clicking "Apply".

Confirm and keep all changes

EaseUS Partition Master will do the changes, and partition F is created to install Windows 10.

Part 2. Install Windows 10 on the New Partition

After creating the new partition, it's time for the easy part: Installing Windows 10 on your new partition. Insert your Windows 10 installation DVD and reboot your computer (you'll need to have enabled booting from your DVD drive in your system BIOS).

Step 1. Click"Install Now".

choose Install Now

Step 2. Windows starts to install automatically. When you're choosing the installation type, be sure to select "Custom (advanced)".

choose advanced mode

Step 3. Be careful here. Choosing the wrong partition could wipe your other Windows installation altogether. Make sure you pick the new partition created for Windows 10 installation in the first step. Choose Partition F to continue.

choose Windows 10 partition

Step 4. After a few times of restart in the process, you'll be prompted to set up your account, enter your license key, and set up Windows.

Windows 10 Setup

Step 5. Congratulations! You should now have a new entry for Windows 10 on your boot screen when you first start up your computer. You've now got all the tools necessary to dual-boot Windows 10 and Windows 8 or 7, or even to triple-boot Windows 10, 8, and 7.

Step 6. Choose between Windows 10 and Windows 7 or 8 when you boot your computer. 

Windows 10 Boot Manager

Click the "Change defaults or choose other options" to change the options. From here, you can choose the Windows operating system you want to boot by default and control how long the operating system selection will appear before it automatically boots the default Windows version.

Change Windows 10 Settings

Dual Boot Software Recommend

Besides creating the dual boot operating system manually, there are many third-party tools that could help people dual booting into numerous operating systems. Among which EasyBCD is the most popular one. 

EasyBCD is a program developed by NeoSmart Technologies to configure and tweak the Boot Configuration Data. It can be used to set up multi-boot environments for computers on which Windows, Linux, BSD, and Mac OS X can be simultaneously installed. If you want to get more detailed information about EasyBCD, please go to its official website.


As you can see, when you dual boot Windows 10 and Windows 8/7, EaseUS Partition Master Free is your good helper. But what EaseUS Partition Master can do is more than that. For example, when your C drive is out of space, EaseUS Partition Master can help you extend C drive in a few clicks. No matter you are a beginner or an expert, you can handle your partition management without a hassle using this tool.

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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