update-grub

GRand Unified Bootloader (common files for version 2)

Install

All systems
curl cmd.cat/update-grub.sh
Debian Debian
apt-get install grub2-common
Ubuntu
apt-get install grub2-common
image/svg+xml Kali Linux
apt-get install grub2-common
CentOS
yum install grub2-common
Fedora
dnf install grub2-common
Windows (WSL2)
sudo apt-get update sudo apt-get install grub2-common
Raspbian
apt-get install grub2-common

grub2-common

GRand Unified Bootloader (common files for version 2)

This package contains common files shared by the distinct flavours of GRUB. The files in this package are specific to GRUB 2, and would break GRUB Legacy if installed on the same system.

grub-legacy

GRand Unified Bootloader (Legacy version)

GRUB is a GPLed bootloader intended to unify bootloading across x86 operating systems. In addition to loading the Linux kernel, it implements the Multiboot standard, which allows for flexible loading of multiple boot images (needed for modular kernels such as the GNU Hurd). Please note that GRUB Legacy is in maintanance mode and new features are only accepted in GRUB 2 (grub-pc package).

grub

GRUB (Grand Unified Boot Loader) is an experimental boot loader

capable of booting into most free operating systems - Linux, FreeBSD, NetBSD, GNU Mach, and others as well as most commercial operating systems.