sudo apt-get install pmount


Add a file   automount.rules in /etc/udev/rules.d   with these lines


ACTION=="add",KERNEL=="sda*", RUN+="/usr/bin/pmount --sync --umask 000 %k"
ACTION=="remove", KERNEL=="sda*", RUN+="/usr/bin/pumount %k"


Then run this:
udevadm control --reload-rules