In order to install a new Ubuntu system into a computer, you'll need to first create a startup disk containing the Ubuntu installation software. The program that runs on the Ubuntu startup disk also allows you to try out Ubuntu 23.04 before installing it on your computer.
Startup disks are typically created with removable media (also known as regular pen drives / USB sticks). There are many ways and different software you can use to create a boot disk based on an ISO image. In this guide I'll demonstrate in 3 steps how to create a startup (boot) disk from another Ubuntu system, using the native Startup Disk Creation tool that comes with all Ubuntu (desktop) versions.
Although this guide shows how to create an Ubuntu 23.04 startup disk, you can use the same procedure to create startup disks for other distributions and operating systems. All you'll need is:
- An ISO file with the installation software. In this guide we'll use the Ubuntu 23.04 desktop image.
- A removable drive such as a USB stick. For Ubuntu, it should be of at least 2GB.
- Physical access to an Ubuntu system where you can plug in your USB stick to create the startup disk. If you want to install Ubuntu on a virtual machine with VirtualBox, you don't need to create a startup disk; you can boot the virtual machine using the ISO directly.
1. Download the Ubuntu 23.04 ISO
The first step is to download the Ubuntu ISO. Go to the official release page and download the desktop version.
Protip: check the alternative downloads page from Ubuntu for more download options. If your download from the browser is too slow, you can try using their provided torrent.
Make sure you have the ISO ready. It should be in the "Downloads" folder after you download it from the Ubuntu website. Also make sure to plug in the USB stick.
2. Open Startup Disk Creation
Open the Startup Disk Creation tool by hitting the
Windows key and then searching for "startup disk".
The tool is fairly simple, with one top area for the ISO selection and a bottom area for the device selection.
In the top section you should select your preferred ISO file, in this guide I'm using Ubuntu 23.04 "Lunar Lobster". In the bottom section, select the removable media device you want to use as startup disk.
Make sure you're using the right disk here - typically, Ubuntu will hide your system disks to avoid mistakes, but if you have other removable media connected then you'll need to know which one refers to your USB stick.
Be aware that the storage media will be fully erased for the disk creation, so make sure to save any files you have on the device prior to using this tool.
Once you confirm both the "Source disk" and the "Disk to use" sections look right, click on the Make Startup Disk button and wait until the process is finished.
3. Using the Startup / Boot Disk
You'll need to restart your computer in order to test your new Startup disk.
Depending on your computer and the setup program it runs, you will have to press a special key to either choose the boot device directly or access the BIOS setup program and adjust your settings in order to boot from your new Ubuntu boot disk. In most computers, this key will be
Example: With my Lenovo Thinkpad laptop, I need to press
F12 as soon as the computer beeps after rebooting, and this will let me choose which device to boot. My old, generic USB stick is recognized as "USB HDD:VendorCo ProductCode".
When the computer successfully starts up the boot program from your Ubuntu disk, you'll then see the Grub boot screen.
You can then choose "Try or install Ubuntu" to proceed.