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  2. Booting process of Linux - Wikipedia

    en.wikipedia.org/wiki/Booting_process_of_Linux

    The second-stage loader (stage2, the /boot/grub/ files) is loaded by the stage1.5 and displays the GRUB startup menu that allows the user to choose an operating system or examine and edit startup parameters. After a menu entry is chosen and optional parameters are given, GRUB loads the linux kernel into memory and passes control to it.

  3. BIOS boot partition - Wikipedia

    en.wikipedia.org/wiki/BIOS_Boot_partition

    In the example 2 above, GRUB 2 stores its core.img in a BIOS boot partition. When used, the BIOS boot partition contains the second stage of the boot loader program, such as the GRUB 2; the first stage is the code that is contained within the Master Boot Record (MBR). Use of this partition is not the only way BIOS-based boot can be performed ...

  4. Bootloader - Wikipedia

    en.wikipedia.org/wiki/Bootloader

    Some boot loaders can also load other boot loaders; for example, GRUB loads BOOTMGR instead of loading Windows directly. Usually, a default choice is preselected with a time delay during which a user can press a key to change the choice; after this delay, the default choice is automatically run so normal booting can occur without interaction.

  5. GNU GRUB - Wikipedia

    en.wikipedia.org/wiki/GNU_GRUB

    GNU GRUB (short for GNU GRand Unified Bootloader, commonly referred to as GRUB) is a boot loader package from the GNU Project.GRUB is the reference implementation of the Free Software Foundation's Multiboot Specification, which provides a user the choice to boot one of multiple operating systems installed on a computer or select a specific kernel configuration available on a particular ...

  6. Multiboot specification - Wikipedia

    en.wikipedia.org/wiki/Multiboot_Specification

    The ELF format is very common in the open source world and has its own field (e_entry) containing the entry point. Before jumping to the OS entry point, the boot loader must provide a boot information structure to tell the OS how it left the system; for Multiboot, this is a struct, and for Multiboot2, every field (group) has a type tag and a size.

  7. Booting - Wikipedia

    en.wikipedia.org/wiki/Booting

    Some boot loaders can also load other boot loaders; for example, GRUB loads BOOTMGR instead of loading Windows directly. Usually a default choice is preselected with a time delay during which a user can press a key to change the choice; after this delay, the default choice is automatically run so normal booting can occur without interaction.

  8. UEFI - Wikipedia

    en.wikipedia.org/wiki/UEFI

    Some operating systems vendors may have their own boot loaders. They may also change the default boot location. The Linux kernel has been able to use EFI at boot time since early 2000s, [120] using the elilo EFI boot loader or, more recently, EFI versions of GRUB. [121] Grub+Linux also supports booting from a GUID partition table without UEFI. [19]

  9. Multi-booting - Wikipedia

    en.wikipedia.org/wiki/Multi-booting

    GRUB, with entries for Ubuntu and Windows Vista, an example of dual booting. Multi-booting is the act of installing multiple operating systems on a single computer, and being able to choose which one to boot.