Ubuntu 10.10 OS.

-Ubuntu is a secure,intuitive operating system that powers desktops,servers,netbooks and laptops.The best thing of all is that Ubuntu is totaly free OS.
- Download Ubuntu here.


-Install Ubuntu using USB stick:

1. Insert a USB stick with at least 2GB of free space
2. Download the Universal USB Installer
3. Click 'Run' when prompted

4.If the security dialog appears, confirm by clicking 'Run' 

5.Read the licence agreement and choose 'I Agree' to continue

6. Select Ubuntu Desktop Edition from the dropdown list

7.Click 'Browse' and open the downloaded ISO file

8.Choose the USB drive and click 'Create'

Your USB is now ready for use .