I just started out with the 3.2" display. I flashed a few sample demo programs. For some reason, the communication with the sd card is not established. I copied the required files to the sd card for Rundemos program. When i compiled and flashed the Rundemos program, it displays mount failed. Also with many sample programs, i get the same response.

I'm using a 4GB sandisk microsd card and the board is plugged through a usb hub which is powered from an external source. Is there something i should modify in the sample programs to make it work ?