From FriendlyARM WiKi
Extend SD Card Section
- When Debian/Ubuntu is loaded the SD card's section will be automatically extended.
- When Android is loaded you need to run the following commands on your host PC to extend your SD card's section:
sudo umount /dev/sdx? sudo parted /dev/sdx unit % resizepart 4 100 resizepart 7 100 unit MB print sudo resize2fs -f /dev/sdx7
(Note: you need to replace "/dev/sdx" with the device name in your system)