Filesystem           1K-blocks      Used Available Use% Mounted on
/cow                   3118508   1927176   1030360  66% /
udev                    991040         4    991036   1% /dev
tmpfs                   399376       804    398572   1% /run
/dev/sdb1              3931092   3931092         0 100% /cdrom
/dev/loop0              683136    683136         0 100% /rofs
tmpfs                   998432      1020    997412   1% /tmp
none                      5120         0      5120   0% /run/lock
none                    998432       104    998328   1% /run/shm