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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
rootfsis not your system partition. Is that what you actually intended to remount? What's the end goal that you're trying to achieve? More context might be helpful.