Documentazione di Ubuntu → Ubuntu 10.04 → Switching From Windows → Installing Ubuntu → Booting from the install CD

## Booting from the install CD

In order to install Ubuntu, you must start your computer using the installation CD. While most computers will start from the installation CD if you simply insert the CD and then restart the computer, some computers may require additional steps to allow this.

If your computer does not start from the installation CD if you insert it and then restart the computer, use the following steps:

1. Restart your computer with the CD still inserted in the drive

2. When the computer restarts, look very carefully at the initial screen it shows. Look for an option such as <F10> Boot Order or Press DEL to enter setup and press the key which is noted (e.g. the Delete key). There are many different variations, so please see your computer manual if you are unsure which button you need to press.

3. Find the options relating to Boot Order, Boot Sequence or similar. Ensure that your CD drive is first in the boot order by following the instructions on-screen.

4. Once satisfied that your CD is first in the boot order, save your changes and restart the computer. It should now start from the Ubuntu installation CD.

If you are still unable to boot from CD, please seek support from one of the Ubuntu support channels.

If it has booted from the CD successfully, Ubuntu will load. This may take a while, as a cut-down copy of Ubuntu must be started from the CD.

Burning your downloaded Ubuntu image |  | Preparing to install