mám tam tohle

df: ‘/var/lib/polkit-1/localauthority/90-mandatory.d’: Permission denied
Filesystem     1K-blocks      Used Available Use% Mounted on
/cow             2031440   1879928     46604  98% /
udev             1978132         4   1978128   1% /dev
tmpfs             404400      1116    403284   1% /run
/dev/sda1      624976672 491534624 133442048  79% /cdrom
/dev/loop0        854016    854016         0 100% /rofs
none                   4         0         4   0% /sys/fs/cgroup
tmpfs            2021988       272   2021716   1% /tmp
none                5120         0      5120   0% /run/lock
none             2021988       280   2021708   1% /run/shm
none              102400        44    102356   1% /run/user