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Linux Boot Process? Best Geeks Know It!

  • The Linux boot process is a critical sequence that initializes a Linux system from a powered-off state to a fully operational state.
  • Remembering the Linux boot process can be simplified by using the acronym Best Geeks Know It (BGKI) which stands for BIOS, GRUB, KERNEL, INIT.
  • Detailed steps within BGKI include BIOS/UEFI performing POST, loading MBR or GPT, transferring control to bootloader, GRUB reading configuration, loading kernel and initramfs, KERNEL initializing hardware and drivers, and INIT (systemd) starting essential services.
  • Key files to remember include /boot/grub/grub.conf for GRUB configuration, /etc/systemd/system/ for systemd unit files, and /etc/inittab for init configuration in traditional systems.

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