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18645c9e70
* Yet another example in the long list of how not releasing your project IN A TIMELY MANNER is creating HUGE PROBLEMS downstream... Looking at you GRUB!!! * Closes #2233
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This directory contains the Grub 2.0 boot records that are used by Rufus
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* Because of issue #2233, boot.img and core.img were created from the GRUB git
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source (@e67a551a48192a04ab705fca832d82f850162b64) obtained on 2023.04.25 from:
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https://git.savannah.gnu.org/cgit/grub.git/tree/?id=e67a551a48192a04ab705fca832d82f850162b64
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on a Debian 11.6 x64 system using the commands:
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./autogen.sh
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# --enable-boot-time for Manjaro Linux
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./configure --disable-nls --enable-boot-time
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make -j4
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cd grub-core
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../grub-mkimage -v -O i386-pc -d. -p\(hd0,msdos1\)/boot/grub biosdisk fat exfat ext2 ntfs ntfscomp part_msdos -o core.img
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* boot.img has been modified to nop the jump @ 0x66 as per grub2's setup.c comments:
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/* If DEST_DRIVE is a hard disk, enable the workaround, which is
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for buggy BIOSes which don't pass boot drive correctly. Instead,
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they pass 0x00 or 0x01 even when booted from 0x80. */
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* Note that, for convenience reasons, the content of boot.img is *not* the one that
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Rufus processes when writing the MBR.
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Instead, the byte array from src/ms-sys/inc/mbr_grub2.h (whose content is identical)
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is what Rufus uses. If you modify these files, be mindful that you may also need
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to update the array in mbr_grub2.h.
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* For details, see src/format.c, src/msys/br.c and src/msys/inc/mbr_grub2.h. |