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The only remaining barrier to entry for Linux

Installation is not the issue holding people back. If the average user were tasked with installing either Windows 10 or Ubuntu 15.04, chances are they’d shudder at the thought of installing either (when, in reality, both are really quite simple). As for upgrading? Both systems have their pros and cons. The nod to ease of use would very much go to Ubuntu in this case. However, we all know that, given the choice, a full installation is far more reliable than an upgrade.