Hi, I got Udoo and followed the get-started instructions (http://www.udoo.org/getting-started/#tab2) to step 3: After I turned on the Udoo (the lights on the board lighted up), I saw nothing on the monitor. Is there anything I can do to debug it? I'm connecting it to a Apple 27' thunderbolt display through a HDMI-MDV adapter. I installed Linux Quad version on the SD card. By the way Mac does not recognize the SD card after I installed the OS on it. Wonder if there is anything I did wrong? Thanks a lot!!!