We may want to install lubuntu desktop/server to SD card, here is a guide for you. This guide is for Linux platform only.

• Any Linux environment, we want sfdisk, dd, wget commands
• An SD Card(at least 2GB)

• u-boot

$wget http://dl.cubieboard.org/software/a20-cubietruck/lubuntu/ct-lubuntu-card0-v1.00/u-boot-sunxi-with-spl-ct-20131102.bin

• bootfs (partition 1)

$wget http://dl.cubieboard.org/software/a20-cubietruck/lubuntu/ct-lubuntu-card0-v1.00/desktop/bootfs-part1.img.gz

• rootfs (partition 2)

$wget http://dl.cubieboard.org/software/a20-cubietruck/lubuntu/ct-lubuntu-card0-v1.00/desktop/rootfs-part2.img.gz

$gzip -d bootfs-part1.img.gz
$gzip -d rootfs-part2.img.gz

sudo sfdisk --force --in-order -uS /dev/sdX <<EOF
2048,24576,L
,,L
EOF

/dev/sdX is the block device of your SD Card

sudo dd if=u-boot-sunxi-with-spl-ct-20131102.bin of=/dev/sdX bs=1024 seek=8
sudo dd if=bootfs-part1.img of=/dev/sdX1 bs=1M
sudo dd if=rootfs-part2.img of=/dev/sdX2 bs=1M
sync

• This guide is suitable for the ct-lubuntu-card0-v1.00 desktop/server images