Question Query Regarding Boot

Mar 17, 2025
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As far as I know, there are two types of boot in a computer:


  1. Pre-boot
    This typically starts from the moment you press the power button.
  2. Post-boot
    This begins when you select the distribution in the bootloader, or is it better to call it distro boot?

Is "post-boot" the correct term, or should it be referred to as "distro boot"?


Also, when systemd or the GRUB bootloader takes a few seconds to initialize the OS, is that considered pre-boot or post-boot?


And when I see the distribution displaying boot logs, is that when post-boot or distro boot starts?