Cannot remount /system partition even when rooted (Sony xperia M2) I have a Sony xperia M2 D2303 with kitkat 4.4.4 and compilation number 18.3.1.C.1.17. I have rooted using KingRoot v4.9.5. I have checked that system is rooted using tools such as root checker. Now, I am trying to remount /system partition as RW but without succcess.

I have googled and tried several solutions but nothing works for me:


Access to /sys/kernel/security/sony_ric and try to disable sony ric
security using:

echo 0 > enable


problem is that sony_ric folder is empty, there is no "enable" file and I cannot create it as partition is RO (read-only).


Using ES file explorer or other file explorers as root I have tried
to remount partition as RW but it fails.
Using ROM Toolbox pro, and then from terminal emulator I have tried
some commands but all fail:


1st attempt:

su 
mount -o remount,rw /system


2nd attempt:

su 
system/bin/mount -o remount,rw /system


3rd attempt:

adb shell 
su 
mount -o rw,remount /system



I have tried to install busybox but it fails as well because I
cannot write to /system partition.
I have tried the methods explained here but nothing works:


Method A -> Cannot be applied in my case since sys/kernel/security/sony_ric/ is empty, no "enable" file exists.

Method B -> Cannot install busybox since /system partition is read-only and I cannot make it rw using mount, etc...

Method C -> I have not tried install init.d because I do not know if it a trusted method and whether it works in my device... Could someone confirm if it works?

Method D -> Cannot be applied in my case, no "enable" file exists in sys/kernel/security/sony_ric/

So at this point I have no idea what to do... Any help will be highly appreciated.
Use a kingroot remover and replace with SuperSU  

King Remover V9

USE FORCE REMOVAL INSTEAD OF START

Once you have root with SuperSU you should have more control ! ( Kingroot works with a temp root ) 

Init.d is just a simple folder to hold network security tweaks ! ... However People use it to implement Before-Boot operations that aren't always to do with network security !