This is a great topic and happy to have found.
Found same as others before..
Also had a 1TB hard drive USB into the real intellink. No videos found,, data not supported.
After review/research,, confirmed it has to be a FAT32 partition device in order to work for the rear entertainment. My 1TB drive worked fine plugged into the front USB and could play music and videos on the front dash screen,, while in park that is.
So how to fix..
First issue.... if your trying to load movies and such to something larger than 32GB (the max partition windows OS will allow for FAT32), you can't do so using windows file manger or disk manager.. but all is not lost.. download the free "Partition Wizard" here... https://www.partitionwizard.com/free-partition-manager.html
You can format up to 2TBs in FAT32 using this tool.
Once formatted,, just click and drag files to it in Windows like you usually would.
I had success with this on a 65Gb SD card and was able to watch movies from it on the rear screen.
I am in the process of formatting a 1TB USB powered western Digital passport hard drive in FAT 32 using the partition wizard software and then will test a movie file.
I also use a screen capture software called Movani Screen Capture to record shows/movies off amazon and then saves them as a MP4 and the size I want..
Here... http://www.movavi.com/movavi-screen-capture/
More to follow...
