What are the linux boot programs?
There are three types of Linux boot programs: 1. LILO, a boot program commonly used in the past. Its main features are simplicity and reliability, but it cannot recognize larger hard disks and file systems; 2. GRUB, which is currently more popular. A popular boot program with powerful functions and flexibility, supporting the booting of multiple operating systems; 3. SYSLINUX, a lightweight boot program, mainly used to create bootable images or embedded systems.
The operating system of this tutorial: Linux5.18.14 system, Dell G3 computer.
In Linux systems, the common boot programs are as follows:
LILO (Linux Loader): LILO is a boot program that was commonly used in the past and is now Gradually it is no longer used. It loads the Linux kernel and boots the operating system. The main features of LILO are simplicity and reliability, but it cannot recognize larger hard drives and file systems.
GRUB (Grand Unified Bootloader): GRUB is currently a popular boot program and is also the default boot program used by many Linux distributions. It is powerful and flexible. GRUB supports booting of multiple operating systems and provides a command line interface and a graphical interface to easily configure and manage boot options.
SYSLINUX: SYSLINUX is a lightweight boot program, mainly used to create bootable images or embedded systems. It works on removable storage media such as USB flash drives using FAT or EXT file systems.
The main function of these boot programs is to load the operating system kernel and guide the system to start. They are able to read the boot configuration file when the computer starts and select the appropriate operating system or boot options based on the settings in the configuration file. Through the boot program, users can choose to boot to a different operating system, a different kernel version, or enter rescue mode. At the same time, the boot program also provides some setting options, such as the passing of kernel parameters, the loading of initialized RAM disk (initrd), etc., to meet specific needs.
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