Exclamation [Q] How to remount as RW the /data /system on a NON-rooted Android device

Greetings XDA members!

I'm facing to a difficult situation:

I must remount as readable theses locations:

/data
/system

on my Android devices (which is a Galaxy Tab 2).

First: If I want remount as readable it's because, I think my Android device has some bad sectors in the Internal Storage.. So, I want run a e2fsck on some locations for fix bad sectors errors OR make the system ignore them.

Second: I know how I can reach recovery mode and I already make many steps for mount.. with no success (see my steps here: http://forum.xda-developers.com/show....php?t=2779376)

Third: My device is non-rooted (and I prefer to not having to do it because it seem possible as explained here: http://android.stackexchange.com/que...n-rooted-phone)

Huge thanks for answers, I need all help you can bring it to me !!