How to Dual Boot Ubuntu 20.04 Alongside Windows 10

If you have Windows 10 on your system but also want access to Ubuntu 20.04, the two options you have are to install Ubuntu in a virtual machine or configure a dual boot environment. We’ll show you how to install Ubuntu 20.04 alongside Windows 10 in this guide.

When you configure dual boot, you’ll get to select which operating system to load into when you power on your system. Unlike virtualization, dual boot operating systems both have direct access to your system’s hardware. If this sounds like a favorable configuration to you, keep reading.

This guide assumes you already have a functioning Windows 10 install on your PC but would like to add Ubuntu alongside it. If your Windows 10 install is corrupted in some way or your hard disk doesn’t have enough room for both operating systems, the option for a dual boot configuration will not even appear in the installation menu.

Remember to grab the Ubuntu installation media and put it on a USB drive, or disc, etc. Let’s get started.

Install Ubuntu on Your Windows 10 System

1. Power off your machine and make sure the Ubuntu installation media is inserted. Power back on, making sure to boot into the Ubuntu installation and not into Windows 10. You may need to hit F11 or F12 on your keyboard to access the boot menu, or configure the proper boot order in BIOS.

2. When the Ubuntu installation environment loads in, kick things off by clicking Install Ubuntu.

Install Ubuntu option

3. Choose your keyboard layout and click Continue.

4. It’s usually a good idea to do a “Normal Installation” and let Ubuntu download updates and drivers. That way, Ubuntu is totally ready to go the first time you boot into it. Click Continue when you’re done making your selections.

Selecting normal installation for Updates and Other Software menu

5. At this stage, Ubuntu should detect that your hard drive already contains a Windows 10 partition and suggest that you install Ubuntu alongside it. Leave this option selected and click Continue.

Choose to install Ubuntu alongside Windows 10 in the Installation Type menu

6. You’ll be required to resize your Windows 10 partition to make some space on your hard disk available for Ubuntu. Use your own discretion here, but give Ubuntu at least 20 GB of breathing room. Drag the sliding divider back and forth between the two partitions to choose how much space they each get. Click Install Now when done.

Resizing Windows 10 and Ubuntu partitions

7. Ubuntu will warn you that it’s about to resize the hard drive’s partitions and the process could take a while. Click Continue.

Prompt asking if you are sure about making the partition changes

8. Confirm once again that you are okay with the hard drive partitioning by clicking Continue.

Confirming partition formatting

9. The next few prompts are part of any Ubuntu install – selecting timezone, configuring a username and password, etc. Fill this out and wait for Ubuntu to install.

Ubuntu installation progress bar

Installation will wrap up after some time and you’ll be able to boot into Ubuntu when your PC restarts.

Boot Into Ubuntu

Every time your computer boots up from now on, you’ll be asked which operating system you’d like to load into. GRUB is the bootloader on your system now, and by default it will load into Ubuntu if no selection is made.

GRUB bootloader giving the option to boot into Ubuntu or Windows

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