Introduction

Grub2Win

Updated  Saturday, October 10, 2026

Grub2Win is a tool that lets you customize GNU Grub from Windows.

Grub2Win runs on all Windows systems from Windows XP  to Windows 11, both EFI and BIOS firmware, both 64 and 32 bit. 

This simple set of scripts and instructions helps you to get Grub booting quickly.

All the files for Grub2Win reside in a single 30 MB directory on the Windows C: drive. 

In EFI mode, a few modules totaling about 1 MB are copied to your EFI partition. 

You don't have to depend on the availability of any Linux partition to boot your computer. 

Grub supports extremely large disks (up to 16 Exabytes) and GPT partitions allowing you to have up to 128 OS images on a single physical disk drive. Grub also supports search, advanced scripting and many partition types. Supported filesystems include Btrfs, ext4, ext3, ext2, NTFS, Fat and Mac hfsplus. Booting from CD and USB is also supported by Grub.

Grub2Win is a shim. It uses a native GNU Grub version 2.16 image generated within Windows. This leveraging means that as Grub is updated and enhanced, the updates should be quickly available in Windows. 

Created with the Personal Edition of HelpNDoc: Easy CHM and documentation editor