Can all Linux operating systems be replaced easily with another operating system?

Linux operating system can be easily replaceable and it does not affect much of existing work for sure. As there are different versions of Linux available with different look-and-feel, different levels for support for specific uses, and different levels of cutting-edge and stability, yet they are all compatible at the core as they use the same kernel and can be switched over to another out without impacting ongoing work or data, all versions can be stored in a separate partition and also in a single system, several versions can be installed at the same time, and select one at system start-up.

All Linux distributions are absolutely available as free. Some important to choose from are openSUSE Linux, Mandriva and the Red Hat based Fedora. Ubuntu is the very user friendly GUI interface Linux operating system and it is the most preferred distro among all. The latest one is Ubuntu 11.10.

Features of the latest release include a refurbished Unity desktop interface and a revised Ubuntu Software Centre with thousands of free applications and new "top rated" views. It can be downloaded from different mirror sites. Moreover, those who want to be virus free, cost effective operating system, they always like to rely on Linux only.