What you need:
- Android phone
- 3.5GB SDCard (or more)
- root access (there are instructables for that)
- full backup (this is SAFE , however you are moving big files and running lots of operations so you want to be 100% sure)
*DISCLAIMER* Even though this process does not make any damage , I am not responsible if anything happens to your Android phone during the process of installing or running Ubuntu.
So we ready to start.
Step 1: Install Busybox libraries
We want the busybox libraries which can help us interact with the android system. You can download busybox installer from Play Store (or Android Market) by going here and downloading that. Navigate to the Install Busybox tab and press the "Install" button.
Once it is installed we are ready to continue to the next step , installing the terminal.