How to upgrade CentOS 6.5 to CentOS 6.6 Posted: 11/28/2014 / By: deployment / In: How To/ Set Up Upgrade Instructions: 1. Upgrade CentOS 6.5 to CentOS 6.6 1.1 root@localhost~# yum update 2. Remove Linux Integration Services by running the following commands: 2.1 root@localhost~# rpm -e microsoft-hyper-v kmod-microsoft-hyper-v 2.2 root@localhost~# reboot 3. Install the new integration service