Filesystem     1K-blocks      Used Available Use% Mounted on
udev             1981700         4   1981696   1% /dev
tmpfs             399248      6340    392908   2% /run
/dev/sdb1      488384532 129845420 358539112  27% /cdrom
/dev/loop0       1529728   1529728         0 100% /rofs
/cow             1996220    145388   1850832   8% /
tmpfs            1996220       444   1995776   1% /dev/shm
tmpfs               5120         8      5112   1% /run/lock
tmpfs            1996220         0   1996220   0% /sys/fs/cgroup
tmpfs            1996220         4   1996216   1% /tmp
tmpfs             399248        40    399208   1% /run/user/999
/dev/sda6      442621152 271959912 148154336  65% /media/ubuntu/577ac8c3-ba63-4a64-9128-4cb64be71cbf