rufus

History

Pete Batard e90eaa4abc [grub] add GRUB 2.0 versioning and enable external core.img download * Closes #419 * Also updated Bled to latest		2014-12-30 19:46:13 +00:00
..
boot.img	[grub] add Grub 2.0 support	2014-11-17 23:41:46 +00:00
core.img	[core] add FreeNAS support	2014-12-16 23:28:07 +00:00
grub2_version.h	[grub] add GRUB 2.0 versioning and enable external core.img download	2014-12-30 19:46:13 +00:00
readme.txt	[core] enable UEFI NTFS support	2014-12-20 00:22:00 +00:00

readme.txt

This directory contains the Grub 2.0 boot records that are used by Rufus

* boot.img and core.img were compiled from git://git.savannah.gnu.org/grub.git,
  commit 72ec399ad8d6348b6c74ea63d80c79784c8b84ae, on a Debian 7.7.0 x64 system.
  This was done following the guide from:
  http://pete.akeo.ie/2014/05/compiling-and-installing-grub2-for.html.

* boot.img has been modified to nop the jump @ 0x66 as per grub2's setup.c comments:
  /* If DEST_DRIVE is a hard disk, enable the workaround, which is
     for buggy BIOSes which don't pass boot drive correctly. Instead,
     they pass 0x00 or 0x01 even when booted from 0x80.  */

* Note that, for convenience reasons, the content of boot.img is *not* the one that
  Rufus processes when writing the MBR.
  Instead, the byte array from src/ms-sys/inc/mbr_grub2.h (whose content is identical)
  is what Rufus uses. If you modify these files, be mindful that you may also need
  to update the array in mbr_grub2.h.

* For details, see src/format.c, src/msys/br.c and src/msys/inc/mbr_grub2.h.