009 Embedded Linux-ARM. StorageQueries and discussion related to usage of Linux on ARM based devices. Linux has been ported to a variety of CPUs which are not only primarily used as the processor of a desktop or server computer, but also ARM, AVR32, ETRAX CRIS, FR-V, H8300, IP7000, m68k, MIPS, mn10300, SuperH, and Xtensa processors, It is also used as an alternative to using a proprietary operating system and toolchain. » 009.04.Boot Loaders
009.04.91.18. What are the key differences between GRUB2 and other boot loaders like LILO, SYSLINUX, and systemd-boot in terms of their architectures, configuration simplicity, flexibility, and maintenance requirements? Can you discuss how these differences impact their suitability for different types of systems and use cases?
Ref: 09. 009.04.19.Comparison with Other Boot Loaders
The key differences between GRUB2 and other boot loaders is:
LILO:-
Flexibility: LILO doesn't support network booting from a network and cannot dynamically interact with different file systems or OS beyond the basic configuration.
Maintenance: Every time we add a new kernel, the Master Boot record and bootloader needs to be updated manually.
Simplicity: LILO has a simpler configuration and loads kernel directly into the MBR(Master Boot Record).
Architecture: LILO has the most simpler architecture in comparison to GRUB2.
2. SYSLINUX:-
Architecture:-Syslinux is a collection of light-weight bootloaders for linux systems.
Flexibility:- Syslinux does support network bootingand is commonly used for live USB distributions.
Configuration:- It uses a simple text file for configuration.
Maintenance:- It can't be used in complex environments.
3. systemd-boot:-
Configuration:- It requires a simple and direct configuration system that doesn't require generating a configuration file.
Flexibility:- Systemd-boot supports network booting and works best with systemd initialisation system.
Maintenance:- It works best with systems already leveraging systemd, providing a cohesive and efficient boot process.
Architecure:- It is configurable with UEFI systems only.
These differences impact suitability for different type of system as:-
One needs to select the bootloader based on the specific system requirements, for e.g. if the system supports BIOS or UEFI.
Network boot is required or not.
Need for multiboot.
ensuring reliable system startups across diverse environments.
