Customization of the GNU Grub boot modules
The GNU Grub module loaded at boot time by your machine depends on the type of firmware your machine is running:
For machines with BIOS firmware, the boot module is loaded from the C:\grub2\g2bootmgr directory. The module name is gnugrub.kernel.bios
For machines with 64 Bit EFI firmware, the boot module is loaded from the \efi\grub2win directory. The module name is gnugrub.kernel64.efi
For machines with 32 Bit EFI firmware, the boot module is loaded from the \efi\grub2win directory. The module name is gnugrub.kernel32.efi
The GNU Grub modules supplied in C:\grub2\g2bootmgr should work in nearly every environment. However, if you wish to make custom changes to the modules, you can customize them. The customization procedure is run under Windows as a .bat script
Warning!!
Customizing the boot modules should only be attempted if you have a specific need.
It is possible to render your system unbootable. Please be sure you have good backups.
The customization package can be obtained by unzipping C:\grub2\winsource\xxgnugen.zip
Then unzipped gnugen directory contains a ReadMe.txt file with full instructions.
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