What is BOOTLOADER (Boot Manager) | UNLOCK BOOTLOADER | FLASH CUSTOM RECOVERY FOR ANDROID

BOOTLOADER 


A boot loader, also called a boot manager, is a small program that places the operating system (OS) of a computer into memory. 

When a computer is powered-up or restarted, the basic input/output system (BIOS) performs some initial tests, and then transfers control to the Master Boot Record (MBR) where the boot loader resides. Most new computers are shipped with boot loaders for some version of Microsoft Windows or the Mac OS. If a computer is to be used with Linux, a special boot loader must be installed.

In Simple Words 

Press PowerButton


Phone BootsUp !


The Screen you see is knows as Splash Screen or Boot Screen. In background a Process is going on which Checks - Your OS Files are Safe
                                Your OS Files are not Corrupted
                                Any Security Breached
                                etc...


If Any of the Checking got failed Your Phone won't Boot !!

This is what bootloader is...

I Hope i Explaied Simply.  ☺☺

Want to "UNLOCK BOOTLOADER" of any Device Follow this Guide - HERE

Related Seaches - 

what is bootloader in microcontroller

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bootloader wiki

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