How to boot linux kernel without bootloader?

What is the difference between a boot loader and a bootstrap loader?

• After power on , the bootloader is controlling the board and does not rely on the linux kernel on any way. And The bootstrap loader acts as a glue between the bootloader and the linux kernel. what does it mean?

• Answer:

  I assume you have little knowledge of microprocessors and operating systems to understand this. So, A bootstrap loader normally has the following functions : Enabling the user to select an operating system to start. Loading the operating system files from the boot partition. Controlling the operating system selection process and hardware detection prior to the initialization The boot-loader is the first piece of software started by the BIOS or UEFI. It is responsible for loading the kernel with the wanted kernel parameters, and initial RAM disk before initiating the boot process. You can use different kinds of bootloaders. The boot loader ultimately has to: Bring the kernel (and all the kernel needs to bootstrap) into memory Provide the kernel with the information it needs to work correctly Switch to an environment that the kernel will like Transfer control to the kernel For PCs : GRUB, SysLinux For Embedded boards : U-boot