I'm very new to Linux. Trying to learn, but curve is kinda steep. So, I loaded Ubuntu 14.04 onto my 16GB Chromebook (HP 14) using the method outlined here http://chromeos-cr48.blogspot.com/2013/10/chrubuntu-for-new-chromebooks-now-with.html (side-by-side with Chrome OS, not in shell). I allocated 5G to Ubuntu in setup, but now when I try to downlaod program (specifically, Steam), I'm told I'm out of space (Errno 28). Is space really insufficient, or is something happening with partitions that I don't understand?
user@chrubuntu:~$ df -h
Filesystem Size Used Avail Use% Mounted on
/dev/sda7 4.8G 4.6G 0 100% /
none 4.0K 0 4.0K 0% /sys/fs/cgroup
udev 1.9G 4.0K 1.9G 1% /dev
tmpfs 390M 1.2M 389M 1% /run
none 5.0M 0 5.0M 0% /run/lock
none 2.0G 84K 2.0G 1% /run/shm
none 100M 36K 100M 1% /run/user
overflow 1.0M 1.0M 0 100% /tmp
/dev/sda1 5.6G 507M 4.8G 10% /media/user/2d288a9e-7022-43cd-8240-2b5f5dbf0c24
user@chrubuntu:~$ sudo du -h -d 1
21M ./.cache
28K ./.gconf
4.0K ./Pictures
628K ./.local
4.0K ./Downloads
3.7M ./.mozilla
4.0K ./Public
184K ./.config
4.0K ./Music
4.0K ./Documents
4.0K ./Desktop
4.0K ./Templates
12K ./.compiz
4.0K ./Videos
26M .