The /dev/sda4 partition has my OSX boot, and I don't wanna lose that. Is it okay if it isn't mounted? And are all these other partitions normal? I only partitioned once when installing Ubuntu.
harvey@harvey-MacBookPro:~$ df -H Filesystem Size Used Avail Use% Mounted on /dev/sda4 255G 6.2G 236G 3% / none 4.1k 0 4.1k 0% /sys/fs/cgroup udev 4.2G 4.1k 4.2G 1% /dev tmpfs 828M 1.4M 827M 1% /run none 5.3M 0 5.3M 0% /run/lock none 4.2G 193k 4.2G 1% /run/shm none 105M 50k 105M 1% /run/user /dev/sda1 207M 22M 186M 11% /boot/efi