Filesystem     1K-blocks     Used Available Use% Mounted on
/dev/root       15077848 11914864   2500092  83% /
devtmpfs          242776        0    242776   0% /dev
tmpfs              49412      256     49156   1% /run
tmpfs               5120        0      5120   0% /run/lock
tmpfs              98800        0     98800   0% /run/shm
/dev/mmcblk0p1     57288    20400     36888  36% /boot
/dev/sda1       15465472  3987624  11477848  26% /home/pi/usb