- Use this guide http://www.pendrivelinux.com/usb-ubuntu-904-persistent-install-windows/ or choose another guide from www.pendrivelinux.com to make a bootable Ubuntu USB stick.
- Turn off your Aspire One, plug in the Ubuntu USB stick, turn on your Aspire One and press F12 to boot from USB.
- Select to boot in Live/Persistent mode. You don't want to install and owerwrite your current system.
- When Ubuntu is ready booting, select System > Administration > Partition Editor from the meny.
- A program called GParted will open. From here you can create new, extend, shrink, delete and format partitons on your HDD.
- Changes you do to your partitions will not apply until you click on Apply. You can do many operations and apply them all on the same time when you're done.