I am trying to mount system as r\w and every app couldn't do it including root explorer and link2sd. I am using Xperia z2 android v4.4.4 and I the device is rooted and I have restarted the phone.

I get the following eeors when trying to do this:

mount -o mount,rw rootfs / mount: operation not permitted


This is how you remount root as read-write:

 mount -o remount,rw /

If you want to remount the system partition as read-write:

mount -o remount,rw /system

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