I'm currently using Ubuntu 14.10, together with Windows 8 as a dual-boot. I installed Ubuntu first, then Windows, so Ubuntu is my "main OS".
When on 23 April 15.04 will be released, will my current system automatically be upgraded to the new version?
Is it possible to remove my current Ubuntu and install a new one, without affecting Windows? I like to reinstall my OS once in a while to get a clean one.