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
009.04.91.5. Reflecting on the transition from LILO to GRUB and then to GRUB2, what were the primary technical challenges encountered during each iteration, and how were these challenges addressed to enhance the functionality, flexibility, and compatibility of Linux boot loaders, especially in accommodating diverse hardware configurations and evolving user requirements?
Ref: 03. 009.04.13.The Evolution of Linux Boot Loaders
The main technical challenge encountered with bootloaders like LILO were that it couldn't boot up from a network, lacked an interactive shell, and required reinstallation in MBR each time the configuration changed. GRUB was completely opposite of LILO as it supported multiboot environments, which simpilfied troubleshooting and system recovery and it doesn't require reinstallation in MBR which is another addon. But with evolution of systems, GRUB also became obsolete. GRUB2 involved features such as scripting support, customizable menus, improved internationalisation, portability and cross-platform. GRUB2 handles system management, security, and recovery. GRUB2 works with both BIOS and UEFI systems ensuring its compatibility with all types of hardware.
