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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 ...
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.
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 ...
GNU Hurd, VMware ESXi, Xen, and L4 microkernels all need to be booted using this method. GNU GRUB is the reference implementation used in the GNU operating system and other operating systems. [3] As of July 2019, the latest version of Multiboot specification is 0.6.96, defined in 2009. [2]
Note: The column MBR (Master Boot Record) refers to whether or not the boot loader can be stored in the first sector of a mass storage device. The column VBR (Volume Boot Record) refers to the ability of the boot loader to be stored in the first sector of any partition on a mass storage device.
LILO (Linux Loader) is a bootloader for Linux and was the default boot loader for most Linux distributions [when?Unlike loadlin, it allowed booting Linux without having DOS on the computer. [3]
Ubuntu Unity 20.10 Ubuntu Unity 20.10 with the default Arc-darker theme. This standard release came out on 22 October 2020. [19] The version incorporates Linux kernel version 5.8 and uses GNU GRUB for both BIOS and UEFI booting. It also adds fixes and updates for many user interface issue, including adding the Compiz settings manager, with many ...
GNU was designed to be a replacement for Unix operating systems of the 1980s and used the POSIX standards as a guide, but either definition would give a much larger "base system". The following list is instead a small set of GNU packages which seem closer to being "core" packages than being in any of the further down sections.