Grub2Win
Updated Friday, December 8, 2017
Grub2Win is a tool that lets you customize GNU Grub from Windows. It supports booting Grub directly from the EFI partition on your PC. In BIOS mode, Grub2Win is loaded by the Windows BCD bootloader. Grub2Win runs on Windows 10, 8, 7, Vista and XP. This simple set of scripts and instructions helps you to get Grub booting quickly.
All the files for Grub2Win reside in a single 18 MB directory on the Windows C: drive. In EFI mode, a few modules totaling less than 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 (over 4 TB) 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 2.02 image generated within Windows. This leveraging means that as Grub is updated and enhanced, the updates should be quickly available in Windows.
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