Ubuntu bootable USB guide for UK PC users.

What is an Ubuntu bootable USB?

An Ubuntu bootable USB is a flash drive that a computer can start from instead of loading the operating system on its internal drive. It contains the Ubuntu Desktop live environment and installer. When the computer starts from the USB, you can normally choose to try Ubuntu temporarily or begin an installation.

The try option is useful because it lets you explore the desktop and test basic hardware before making permanent changes. The install option can place Ubuntu on the internal drive, either as the main operating system or alongside another system when the installer and disk layout support that choice.

This product is standard installation media. It is not a Windows activation key, not a paid Ubuntu licence and not a persistent portable operating system designed to save every live-session change back to the USB.

Why buy a prepared Ubuntu USB when Ubuntu is free?

Ubuntu itself is free and open-source software. A prepared USB is a convenience service for people who do not want to download a multi-gigabyte image, choose a USB-writing tool and create the installation media themselves. The charge covers the physical 16GB drive, preparation, boot testing, labelling, packing, instructions and UK delivery.

A ready-made drive can be helpful when a computer has no working operating system, the available internet connection is slow, another suitable computer is not available for creating media, or the buyer simply prefers a physical installer that arrives ready to use.

Which computers are suitable?

The supplied image is intended for conventional 64-bit Intel and AMD PCs, commonly described as AMD64 or x86-64. The current Ubuntu Desktop release is designed for reasonably modern laptops and desktops. As a practical starting point, look for a dual-core 2GHz processor or better, around 6GB RAM or more, at least 25GB of internal storage for installation and a working USB port.

Processor architecture matters. This drive is not intended for Apple Silicon Macs, ARM-only laptops, Chromebooks that cannot boot ordinary PC installation media, games consoles, tablets or phones. Older Intel Macs may behave differently from PCs and are not guaranteed.

Even when the processor and memory are suitable, Wi-Fi adapters, graphics hardware, touchscreens, fingerprint readers and unusual storage controllers can vary. The safest approach is to use the live try option and test the keyboard, touchpad, display, sound, networking and shutdown before installing.

Use the dedicated Ubuntu USB compatibility checker before ordering for a fuller checklist.

How do I start a PC from the Ubuntu USB?

Switch the computer off completely, insert the USB into a direct port and then switch it on. Immediately press the computer's temporary boot-menu key several times. Common keys include F12, Esc, F9, F10 and F11, but the correct key depends on the manufacturer and model.

When the boot menu appears, choose the USB device. On a modern UEFI computer, the USB may appear twice; choose the entry beginning with “UEFI” where available. If the USB is not shown, try another port, disable fast startup in the existing operating system, check that USB boot is enabled in firmware, or review the manufacturer's support information.

Should I try Ubuntu or install it?

Try Ubuntu first

Starting the live desktop does not by itself replace the operating system on the internal drive. It is the best first step for checking whether essential hardware works. Remember that a standard live session is temporary: files and settings may disappear at shutdown unless you save them to another drive.

Install only after backing up

An operating-system installer can repartition or erase a drive. Back up irreplaceable files before starting. Read every storage screen carefully, identify the correct drive and do not choose an erase option unless you intend to remove the existing contents. Keep a laptop connected to mains power throughout installation.

After installation, Ubuntu can download updates and, where available, additional drivers. An internet connection is therefore strongly recommended even though it is not always required just to start the live desktop.

Common Ubuntu USB startup problems

The USB does not appear in the boot menu

Try a different USB port, preferably a standard USB-A port directly on the computer rather than a hub. Shut down fully rather than restarting. Check the firmware's USB boot setting and use the one-time boot menu rather than changing the permanent boot order.

The computer returns straight to Windows

The USB may not have been selected, or fast startup may have prevented a complete shutdown. Hold Shift while choosing Shut down in Windows, then try the boot key again. Some systems also require the USB's UEFI entry.

Wi-Fi or graphics are not perfect in live mode

Some hardware needs additional drivers that can be installed after Ubuntu is on the internal drive and connected to the internet. If the display is unusable or essential hardware is missing, do not install until you have checked model-specific guidance.

Ubuntu bootable USB questions