https://sourceforge.net/projects/grub2win/files/ wrote:Grub2Win is a tool that lets you boot grub2 from your PC's EFI firmware or MBR. It supports Windows 10, Windows 8, Windows 7, Vista and XP. Download this simple Windows program and instructions that help you get grub2 booting quickly. Grub2 supports extremely large disks (over 4 TB) and GPT partitions allowing you to have many OS images on a single physical disk drive. Grub2 also supports search, advanced scripting and many partition types. Supported filesystems include Btrfs, ext4, ext3, ext2, NTFS, FAT and Mac HFS+. Booting from CD and USB is also supported by Grub2.
Grub2Win latest release (currently v7.8.6, dated 2016-09-16) can be downloaded from https://sourceforge.net/projects/grub2win/files/.
Older GRUB4DOS appears to be not UEFI capable, but is still being developed(?).
https://gna.org/projects/grub4dos/ wrote:GRUB4DOS is an universal boot loader based on GNU GRUB. It can boot off DOS/LINUX, or via Windows boot manager/syslinux/lilo, or from MBR/CD. It also has builtin BIOS disk emulation, ATAPI CDROM driver, etc.
GRUB4DOS latest stable release (v0.4.4-2009-06-20) can be downloaded from http://download.gna.org/grub4dos/.
When using GRUB4DOS, utilities like these might be handy:
- GRUB4DOS Toolbox for Windows (http://fartersoft.com/grub4dostoolbox/)
- Cloudbootlacer (http://apps.fartersoft.com/cloudbootlacer/main)