Recovery mode in Android Explained

RECOVERY MODE IN ANDROID
WHAT IS RECOVERY MODE IN ANDROID?
       Before entering the topic,we should know ahout custom roms,kernal ,stock rom and dalvik cache.
KERNAL AND STOCK ROM
             ROM ìs the Read only memory that permits us to rèad and not to write.This is the source upon which the device run.The Kernal is the one which allows the communication between hardware and software.The Stock Rom essentially pertains to the software made by the company developers that will be available while purchasing new android device.

 CUSTOM ROM
          Since  the android is open source,source code   can be written.It is being released unofficially coming up with the small changes in stock rom aiming at satisfying the customèr needs.To ìnstall the rooting is required which allows us  super user permission.
Forum.xda developers is the best website for getting  them.

DALVIK CACHE
          Dalvik refers to Virtual.DALVIK CACHE ìs created for every apps that will make the apps to run in efficient manner
RECOVERY MODE:-
            The mode facilitates installation of custom roms,efficient wiping of dalvik cache and the cache partitions.Stock rom can be replaced with custom rom through stock recovery.However custom recovery give more options suiting using need.Major custom recoveries are Clockworkmode(CWM),Team work Recovery Project(TWRP).It is preferrable to use the philz touch recovery which uses Clockworkmode.
Features:-
Installation of Stock rom withou PC when the rom ìs ìn  .zip
Factory reset helps to overcome kernal panic but data get reset.
Wipe Cache/Cache partition helps to overcome phone struck at bootloop.
Fix permissions in certain recoveries help to overcome the pròblem of force close.
Wiping Dalvik cache can make device faster when the apps behave ubnormally.

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