The full bootstrap program is stored in the boot blocks at a fixed location on the disk. A disk that has a boot partition is called a boot disk. The code in the boot ROM basically instructs the read controller to read the boot blocks into the memory and then starts the execution of code.

Where is the bootstrap stored?

Alternatively referred to as bootstrapping, bootloader, or boot program, a bootstrap loader is a program that resides in the computer's EPROM, ROM, or another non-volatile memory. It is automatically executed by the processor when turning on the computer.

Why bootstrap is stored in ROM?

The bootstrap loader is stored in the ROM because It is a non-volatile memory meaning that that the information is not lost when the computer shuts down. In addition is has a small memory size and is used to only keep permanent data which are necessary to bring about basic functions i.e. bootstrap loader.