Ubuntu 8.04.4 LTS (Hardy Heron) 
The Ubuntu Cloud image can be run on your personal Ubuntu Cloud, or modified, rebundled and uploaded to Amazon EC2. For further instruction on setting up a personal Ubuntu Cloud, see Getting Started with Ubuntu Cloud
There are two images available, each for a different type of computer:
- 32-bit Cloud image
- For almost all PCs. This includes most machines with Intel/AMD/etc type processors and almost all computers that run Microsoft Windows, as well as newer Apple Macintosh systems based on Intel processors. Choose this if you are at all unsure.
- 64-bit Cloud image
- Choose this to take full advantage of computers based on the AMD64 or EM64T architecture (e.g., Athlon64, Opteron, EM64T Xeon, Core 2). If you have a non-64-bit processor made by AMD, or if you need full support for 32-bit code, use the Intel x86 images instead.
A full list of available files can be found below.