The support for UEFI means expanded support for modern hardware platforms and greatly increased disk compatibility and size limitations. In addition, you can achieve much faster boot speeds among many other benefits.
To install a new system or upgrade an existing system to support UEFI, you should first take a backup of your current installation. Next, install the new image (using the link below), then restore your backup to your new appliance.
Download: https://sourceforge.net/projects/efw/