Already did burned the booting image on the board following the post.
And then let’s do burning the booting image on eMMC of the board.
1. .zip image in USB stick
If the booting image needed, download it at the link.
And copy the image to the USB stick.
2. Insert the USB stick to the BPI board
3. Mount the USB on the BPI board
$ sudo mount ‘USB path’ ‘directory’
(Ex. $ sudo mount /dev/sda1 /usb)
4. Burn the image with ‘bpi-copy’ command
$ bpi-copy ‘image path’
(Ex. $ bpi-copy /usb/2017-11-13-ubuntu-16.04-mate-desktop-beta2-bpi-m2u-sd-emmc.img.zip)