I am logged in as a root user i want to edit my /etc/sysconfig/network-scripts/ifcfg-eth0 file when i edit this showing -- INSERT -- W10: Warning: Changing a readonly file while i have logged in as root user my mount showing [root@s1202 ~]# mount rootfs on / type rootfs (rw) /dev/root on / type ext3 (ro,data=ordered) /dev on /dev type tmpfs (rw) /proc on /proc type proc (rw) /sys on /sys type sysfs (rw) /proc/bus/usb on /proc/bus/usb type usbfs (rw)