How to create a USB drive bootable in Ubuntu

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USB drives are common these days due to the size and space they offer. Nowadays, using a disk became obsolete. We have seen common scenarios where people need their USB drive as installer media.

This article will discuss how to create a USB drive bootable in Ubuntu 20.04. You can also follow the same steps in Ubuntu 16.04, 18.04, and 21.04 to make the USB drive bootable.

USB Drive requirements

Drive requirement is based on the OS. If OS has a bigger size then you need a USB drive with a large capacity. If you want to make your USB drive bootable for the server image you will be needing less space on the other hand Desktop version would be needing higher space.

Example size for USB drive to install different OS:

  • Ubuntu 20.04 Desktop : 4 Gb
  • Ubuntu 20.04 Server : 2 Gb

In my case I am using an 8 Gb USB drive.

Download the .iso image

In this article, I am using the ubuntu 21.04 version. So, you can use this link to download the ubuntu .iso image.

Create Bootable

Open Disk Startup.

In Ubuntu, you can search the startup disk in the ubuntu search menu. See the snapshot below.

Select .iso image and USB drive.

After clicking the startup disk icon you will get the below mention snapshot here you can select the OS and USB drive you want to make bootable.

Make a backup of your USB drive data otherwise, it will delete all the data and it won’t be recovered later. Only agree to mention step if you don’t need data in your USB drive.

Installation complete

When done, it should prompt you installation complete message. You will see the similar option mentioned in the below snapshot.


In this article, we have shown that how to create USB bootable in Ubuntu 20.04 step by step. After completion of the installation, you can use the USB drive in other systems to install this Operating system. Have a look at How to install Ubuntu 21.04 (Hirsute Hippo).

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