Improve disk messages to user
Improve disk messages to user

chrisroberts/vagrant,marxarelli/vagrant,sni/vagrant,chrisroberts/vagrant,marxarelli/vagrant,mitchellh/vagrant,sni/vagrant,marxarelli/vagrant,sni/vagrant,chrisroberts/vagrant,sni/vagrant,mitchellh/vagrant,mitchellh/vagrant,chrisroberts/vagrant,mitchellh/vagrant,marxarelli/vagrant