External HD is not displayed on Infuse!

I have a 1Tb External HD with all my movies and series, but Infuse not show it on my jailbroken Apple TV!
What should I do?

My iMac is a iMac 21.5-inch, Mid 2010 with OS X Yosemite 10.10.3
The External HD is a 1TB Samsung M2 Portable Media connected via USB