How to Create a Bootable Ubuntu USB Drive?

Creating a bootable USB drive is the most efficient and recommended method to install Ubuntu on a computer. This article provides a straightforward, step-by-step guide on how to flash the Ubuntu ISO file onto a USB drive using Rufus for Windows users and BalenaEtcher for macOS and Linux users. By following these industry-standard methods, you will ensure a clean, reliable, and bootable installer for your system.

Prerequisites Before You Begin

Before starting the creation process, ensure you have the following components ready:

• A USB Flash Drive: Minimum 8GB capacity. Back up any existing data on it, as the process will completely erase the drive.
• The Ubuntu ISO File: Always download the latest Long Term Support (LTS) version directly from the official Ubuntu website.
• Flashing Software: Rufus (for Windows) or BalenaEtcher (for macOS/Linux).

Method 1: Using Rufus on Windows

Rufus is a lightweight, open-source tool widely considered the standard for creating bootable drives on Windows.

1. Download and open Rufus: Plug your USB drive into your Windows PC and launch the Rufus application.
2. Select your device: Under the “Device” dropdown menu, ensure your USB flash drive is selected.
3. Choose the Ubuntu ISO: Click the “Select” button next to “Boot selection” and browse to your downloaded Ubuntu ISO file.
4. Configure partition scheme: For most modern computers, leave the Partition Scheme as GPT and Target System as UEFI. If you are installing on a much older computer, change this to MBR.
5. Write the image: Click “Start.” If prompted to download additional files (like Syslinux) or to write in “ISO Image mode,” accept the recommended settings and click OK.
6. Complete the process: Wait for the status bar to turn green and read “Ready.” You can now close Rufus and safely eject your USB.

Method 2: Using BalenaEtcher on macOS and Linux

BalenaEtcher is a cross-platform tool that features a simple, user-friendly interface perfect for Mac and Linux environments.

1. Launch BalenaEtcher: Insert your USB drive and open the BalenaEtcher application.
2. Flash from file: Click the “Flash from file” button and select your downloaded Ubuntu ISO file.
3. Select target: Click “Select target” and choose your connected USB flash drive from the list. Be careful to select the correct drive.
4. Flash the drive: Click the “Flash!” button. You may be prompted to enter your administrator password to authorize the process.
5. Validation: Once the flashing process reaches 100% and finishes validating, the tool will safely unmount the drive. You can now remove it.

Booting Into the Ubuntu Installer

Once your bootable USB is ready, insert it into the computer where you intend to install Ubuntu. Restart the machine and immediately press your motherboard’s boot menu key (usually F12, F11, F2, or Del, depending on the manufacturer). Select your USB drive from the boot override menu to launch the Ubuntu installation wizard.