# mount | grep mnt
/dev/sda4 on /mnt-system type ext4 (rw,relatime)

# uname -a
Linux Microknoppix 3.16.3-64 #10 SMP PREEMPT Fri Sep 26 02:00:22 CEST 2014 x86_64 GNU/Linux


lbrtchx: http://knoppix.net: Why would the running knoppix partition be mounted rw?