In this guide, we will know, How to Dual Boot Windows 10 and Ubuntu. If you’re a new user then you should install Ubuntu alongside Windows 10, It is recommended for everyone. Most of the time we prefer to use Windows because we’re better engaged with the Windows system.

This is the most used Linux distribution over any Linux distribution. Ubuntu is good for beginners and as well as the Advanced users who want to learn more about Linux. Ubuntu has a rich packages repository that makes it easy for you to download any package using the terminal. I always prefer to use Ubuntu alongside Windows 10 because I mostly use my Windows.

All the modern computers come with preinstalled Windows 10 and have UEFI interface instead of old BIOS because no one wants to use old versions. If you have a computer with preinstalled windows 10, You can easily dual boot Windows 10 and Ubuntu.

Here I’ll share all the steps you need to install Ubuntu alongside Windows 10. First of all, we’ll create free space on Windows 10 using Disk Management. Therefore, when we’ll install Ubuntu then we have to create two partitions Root and Swap partition using free space.  

Dual Boot Windows 10 and Ubuntu

Though I have used Ubuntu 18.04 LTS here, you can use whatever Ubuntu version you have, it doesn’t matter. You have Ubuntu 19.04 or 16.04, not matter as the method is similar for all.

I have divided all the steps into heading sections for readability. I assume that you have downloaded the latest Ubuntu ISO image on your computer. If you’ve done yet go and download Ubuntu Latest Version.

Step 1: Create Bootloader USB Drive of Ubuntu

It is a very crucial step without any Bootable USB drive we can’t install Ubuntu alongside Windows 10. I recommend you, Rufus, to create Ubuntu Live Bootable USB Drive, otherwise, you can read this useful guide – How to Create Bootable USB

Step 2: Create Partition for Ubuntu Installation

We’ll create free space on the partition where Ubuntu will be installed. Probably your computer might have several partitions or a single partition named C Drive where Windows is installed. You can shrink some space from the partition and create a free space.

If your commuter has two disks installed SSD and HDD, you may choose Hard Disk to Install Ubuntu alongside Windows 10. You have to only shrink some free space from the Hard Disk for Ubuntu installation. Here’s how to do it?

# To create free space on the partition we’ll use Disk management, On Windows 10 press the Windows+X shortcut key to open Disk Management tool from the sidebar quick access menus. You can also use a control panel to open the Disk Management tool.

# In the Disk Management Tool, right-click on the partition that has free space available then click the Shrink Volume. Next, enter the amount of space to shrink in MB, then click Shrink. You can enter the amount in MB whatever you want but at least 30-40GB.

Create Free space on Windows 10 to Install Ubuntu on Windows 10

# This makes a free unallocated space, just leave as it is. We’ll use this free space to dual boot Windows 10 and Ubuntu.

Shrink volume to create free space

Step 3: Disable Secure Boot, If you get Invalid Signature Error

It may be possible when you try to install Ubuntu you may get this message “Invalid Signature Detected”. You can disable secure boot to ignore this error if you don’t get any error like this just skip this step.

Know Here – How to Disable Secure Boot in Windows 10

Step 4: Install Ubuntu alongside Windows 10

1. Once you’re ready to install Ubuntu on Windows 10, connect your Ubuntu USB drive to your PC and boot your PC with Ubuntu Boot media.

Either you can boot Ubuntu USB through Windows Advanced Startup or UEFI Boot manager. You can get Advanced Startup Restart under the recovery options in Windows 10 settings.

When your computer starts you can press F9 or F12 key or whatever your commuter does support for Boot option.

2. Once you’ve booted your computer with Ubuntu Installation Media USB, you can start the installation process by selecting Language, Keyboard settings.

3. Connect your WiFi network if possible, If the connection is available you can install the third-party drivers for hardware and system.

4. Next, Either you can select Normal Installation or Minimal Installation. Normal installation is recommended for users, you will get all the useful apps preinstalled with it.

5. If you want to install third-party software including Graphics, Bluetooth, WiFi drives, you can select. You can configure the secure boot too by entering any 6 character passwords, then continue. When you will restart Ubuntu, you will be asked to enter the password to register a new MOK in UEFI.

How to Dual Boot Windows 10 and Ubuntu

6. By default you’ll get installation type “Install Ubuntu alongside Windows Boot Manager”, Select “Something else” instead.

How to Dual Boot Windows 10 and Ubuntu

7. You will get some free space here that you created on disk management. Select the free space and click the + button to create a new partition for Ubuntu.

How to Dual Boot Windows 10 and Ubuntu

Here, We’ll create two different partitions Swap and Root, So that We could Dual Boot Windows 10 and Ubuntu. A swap partition is just like a virtual Ram on your computer, and Root is where Ubuntu is to be installed.

Enter the size of the Swap partition, you can enter the 2X size of your installed RAM, It is not recommended when you have sufficient RAM installed. Of the remaining free space, you can create an “Ext4” partition.

Install Ubuntu on Windows 10

Select type for the new partition as “Primary Partition”, It is a Bootable partition whereas Logical not.

install Ubuntu alongside Windows 10

Select Location for the new partition as “beginning of this Space” and use it as the “Swap area” for Swap partition and “Ext4” for the Ubuntu Installation. (Mount point should be Root for the Ubuntu Installation)

install Ubuntu alongside Windows 10

8. Device for boot loader installation: Select your primary drive where Windows is installed, no matter if you have two storage drives.

9. Next, Click the Install now button and then continue to format the selected partitions.

10. Enter your location and create a non-root user with Sudo privileges. You’ve done almost everything, click continue to start the installation process.

11. Once Ubuntu installation is finished as if you won a battle. Restart Ubuntu and log in with your username and password.

I hope, you’ve successfully installed Ubuntu on Windows 10. Now you’re ready to Dual Boot Windows 10 and Ubuntu. When the computer starts you can choose which operating system you wanna boot. At the same time, you cannot boot Ubuntu and Windows simultaneously because it is not possible in any aspect.