What is the bootloader?

What is the bootloader?Boot - Start Something, Make, Loader -Processes done, execution of works.The bootloader is the sum of some codeFirst boot the kernel, later onBoot up the kernel Android system("Means the phone starts")After the power on, the first thing to start is to startBy the bootloader.Bootloader What are the different hardware?(Button) can understand the work, for example:You press the Volume Down buttonThe bootloader can understand. IfGiving such a program to the kernelHold down the Volume Down buttonGo to the fastbut menu, then the phoneIf you're at the launchHold down the Volume Down buttonIf you have to go to fastboot modeCan beWhy Bootloader Unlock?* Root, Custom Recovery Install (CWM /TWRP), Custom ROM Install, Custom KernelTo install.Unless the bootloader unlocksNo modification is possible. OnlyOfficial Ram and theirsTo use the ficusIt is possible, nothing is possible beyond itCan not do★ Why the bootloader is locked?Bootloader processor and motherboardSpecifically,Every mobile phoneDifferent for the motherboardThe bootloader is created.Since the bootloader unlocks the ROM /Kernel / Recovery Changes everythingCan be dropped, hence the phone brick (brick) Are likely to be (fearFeeling? ) There is nothing like thatThat's why locked.Moreover, the manufachersThe device costs a lot of moneyRom for the developer, so they areEveryone wants to stay in their ram.So the bootloader lock causesWithout unlocking it anywayAnother ROM is not possible to flash.Institution is also the way to unlockGives you"There is nothing to be so happy aboutThere are conditions* Unlock if they are yoursNo Type of Guarantee /Warranty will not "So before unlocking the bootloaderKeep in mind that you laterNo service will be available.* Your phone's find phone optionsDo not work