Get Ubuntu 11.04 (Natty Narwhal)

There are two ways to get Ubuntu 11.04 Natty Narwhal :

1-Upgrade from Ubuntu 10.10 .

If you have Ubuntu 10.10 then need to download Ubuntu 11.04 just follow the steps below .

Desktop system .

To upgrade from Ubuntu 10.10 on a desktop system, Start the Update Manager (System > Administration > Update Manager) or press Alt+F2, type in "update-manager -d" (without the quotes), and press Enter. Update Manager will open up and display the message, "New distribution release '11.04' is available." Click Upgrade and follow the on-screen instructions.

Server System .

1. Install update-manager-core if it is not already installed: 
   
   

   sudo apt-get install update-manager-core

2. edit /etc/update-manager/release-upgrades and set Prompt=normal
3. Launch the upgrade tool: 
   
   
   sudo do-release-upgrade
   
   
4. Follow the on-screen instructions.

 Download Ubuntu 11.04 (Natty narwhal).

• http://www.ubuntu.com/testing/download (Ubuntu and Ubuntu Server)

In addition, they can be found at the following links:

• http://releases.ubuntu.com/natty/ (Ubuntu, Ubuntu Server)
  http://cdimage.ubuntu.com/releases/natty/beta-2/ (64-Bit for Mac, Ubuntu DVD, source)
  http://uec-images.ubuntu.com/releases/natty/beta-2/ (Ubuntu Server for UEC and EC2)
  http://cdimage.ubuntu.com/ubuntu-netbook/releases/natty/beta-2/ (Ubuntu Netbook ARM)
  http://cdimage.ubuntu.com/netboot/11.04/beta-2/ (Ubuntu Netboot)
  http://releases.ubuntu.com/kubuntu/natty/ (Kubuntu)
  http://cdimage.ubuntu.com/kubuntu/releases/natty/beta-2/ (64-Bit for Mac, Kubuntu DVD, preinstalled ARM images)
  http://cdimage.ubuntu.com/xubuntu/releases/natty/beta-2/ (Xubuntu)
  http://cdimage.ubuntu.com/edubuntu/releases/natty/beta-2/ (Edubuntu)
  http://cdimage.ubuntu.com/ubuntustudio/releases/natty/beta-2/ (Ubuntu Studio)
  http://cdimage.ubuntu.com/mythbuntu/releases/natty/beta-2/ (Mythbuntu)