GRUB grand unified bootloader

G-R-U-B

GRUB (short for Grand Unified Bootloader) is a popular boot loader used on many Linux and Unix-like operating systems. It is responsible for loading the operating system kernel and other necessary files, and it is typically the first software component that runs when a computer boots up.

GRUB provides a menu interface that allows the user to select which operating system or kernel to boot, and it supports a wide range of file systems, including the popular ext4 file system used by many Linux distributions. It also allows users to specify boot options, such as kernel parameters or alternate boot locations.

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One of the advantages of GRUB is its flexibility and configurability. It can be customized to meet specific system requirements, and it is often used as part of the boot process for custom Linux distributions and other specialized systems. Additionally, GRUB is open source software, meaning that its source code is freely available for inspection and modification by developers and users.

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