Thanks for the reply! I have been using the internal SDCARD through the mini usb. I did try an external SDCARD after reading your post, and it is working correctly.

Apparently eDGe treats internal and external SDCARD differently when mounting them. with utf8 flag for external SDCARD and without utf8 flag for internal SDCARD. Is there a reason to do this?

keng2000, can you try the same thing you did for the internal SDCARD? Then I think you can not read the Chinese character. Do you know if I can change how it mounts the internal SDCARD? (Like fstab file under Linux)

Thanks!