So, if you set up your wireless network at this point, it's worth then clicking the Back button to go back to the last screen (Preparing to install Ubuntu) and ticking the box marked 'Download updates while installing'. We advise you to connect during the installation so we can ensure your machine is up to date. If you are not connected to the internet, you will be asked to select a wireless network, if available.If you're not connected to the internet, we'll help you set up wireless at the next step.You should also stay connected to the internet so you can get the latest updates while you install Ubuntu.We advise you to select Download updates while installing and Install this third-party software now.You should also make sure you have enough space on your computer to install Ubuntu.We recommend you plug your computer into a power source.If your computer doesn't automatically do so, you might need to press the F12 key to bring up the boot menu, but be careful not to hold it down - that can cause an error message.You should see a welcome screen prompting you to choose your language and giving you the option to install Ubuntu or try it from the CD. Most newer computers can boot from USB.If you don't get this menu, read the booting from the CD guide for more information.

Put the Ubuntu CD into the CD/DVD-drive.

It's easy to install Ubuntu from a CD.

If you are interested in giving Ubuntu 12 a try on your current computer without running any risk, please check out our Guide: Running Linux From a USB Drive As a Virtual Machine or Bootable Disk. To install Ubuntu, you'll need to create an installation CD or USB stick once your download is complete. Our long-term support (LTS) releases are supported for five years - ideal for organisations undertaking large deployments.

Ubuntu will work with your existing PC files, printers, cameras, music players and smartphones - and it comes with thousands of free apps.

Ubuntu download file