Filesystem     1K-blocks    Used Available Use% Mounted on
udev             3954336       0   3954336   0% /dev
tmpfs             800452    1892    798560   1% /run
/dev/sdb1       15716352 2652704  13063648  17% /cdrom
/cow             4002248 1845952   2156296  47% /
tmpfs            4002248       0   4002248   0% /dev/shm
tmpfs               5120       8      5112   1% /run/lock
tmpfs            4002248       0   4002248   0% /sys/fs/cgroup
tmpfs            4002248    1736   4000512   1% /tmp
tmpfs             800448      80    800368   1% /run/user/999