Bootloader

A bootloader is a small program that initializes a computer's hardware and loads the operating system kernel into memory during the startup process. It typically resides in firmware like BIOS or UEFI and handles low-level tasks such as memory detection and device initialization before handing control to the OS.

Also known as: Boot Loader, Bootstrap Loader, Boot Manager, Boot ROM, Initial Program Loader

Why learn Bootloader?

Developers should learn about bootloaders when working on embedded systems, operating system development, or system administration to understand system boot sequences and troubleshoot startup issues. It's essential for customizing boot processes, implementing secure boot mechanisms, or developing firmware for devices like IoT gadgets or servers.

Learning Resources

• docs: OSDev Wiki: Bootloader
• docs: GNU GRUB Manual
• tutorial: Linux Boot Process Explained
• course: Bootloaders in Embedded Systems - Coursera
• video: How Computer Boots Up - YouTube