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Is possible to boot system from SD card on Cubieboard. The cpu will try to boot from SD card first. If failed, the CPU will boot from Nand on board. This feature is very useful. We can install Android on Nand for entertainment, and install different Linux Distros on SD card for work/learning.
$gzip -d cb-a20-lubuntu-desktop-card-v105.img.gz $sudo dd if=cb-a20-lubuntu-desktop-card-v105.img of=/dev/sdX bs=1M $sync
Use win32diskimager to write the image to SD Card
Please replace the /dev/sdX with your SD card on your system.