Explicitly build msdos partition support into EFI executables
PATCH 1/1 Explicitly build msdos partition support into EFI executables
Hi:
Currently EFI executables don't include part_msdos or vfat support by default. This means that EFI executables can only be launched directly from ISO9660 filesystems. The attached patch explicitly adds part_msdos and vfat so that the rest of the GRUB files can be found on other devices, such as USB keys.
Thanks,
Signature · 3 lines
*Mario Limonciello* Linux Engineer *Dell*| OS Engineering
=== modified file 'ChangeLog'
ChangeLog +5 -0
@@ -1,3 +1,8 @@ +2011-01-06 Mario Limonciello <[email protected]> + + * util/grub-mkrescue.in: Explicitly build part_msdos and vfat into + efi executables. + 2011-01-05 Vladimir Serbinenko <[email protected]> Run terminfo_cls on initing terminfo output to clear the screen and
=== modified file 'util/grub-mkrescue.in'
grub-mkrescue.in +2 -2
@@ -283,9 +283,9 @@ mkdir -p "${efi_dir}/efi/boot" # build bootx64.efi - make_image "${efi64_dir}" x86_64-efi "${efi_dir}"/efi/boot/bootx64.efi "" + make_image "${efi64_dir}" x86_64-efi "${efi_dir}"/efi/boot/bootx64.efi "part_msdos fat" # build bootia32.efi - make_image "${efi32_dir}" i386-efi "${efi_dir}"/efi/boot/bootia32.efi "" + make_image "${efi32_dir}" i386-efi "${efi_dir}"/efi/boot/bootia32.efi "part_msdos fat" mformat -C -f 2880 -L 16 -i "${iso9660_dir}"/efi.img :: mcopy -s -i "${iso9660_dir}"/efi.img ${efi_dir}/efi ::/
Quoted 8 lines · Mario Limonciello
Hi:
Currently EFI executables don't include
part_msdosor vfat support by default. This means that EFI executables can only be launched directly from ISO9660 filesystems. The attached patch explicitly addspart_msdosand vfat so that the rest of the GRUB files can be found on other devices, such as USB keys.
part_gpt should also be included (after all GPT is part of UEFI spec).
Quoted 7 lines
Thanks,
--
Mario Limonciello
Linux Engineer
Dell | OS Engineering
Quoted 6 lines
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- Keshav
Quoted 8 lines · Mario Limonciello
Hi:
Currently EFI executables don't include
part_msdosor vfat support by default. This means that EFI executables can only be launched directly from ISO9660 filesystems. The attached patch explicitly addspart_msdosand vfat so that the rest of the GRUB files can be found on other devices, such as USB keys.
grub-mkrescue is only for creating ISOs. If you need to install to HDD please use grub-install. For custom EFI executables use grub-mkimage
Quoted 6 lines
Thanks,
Signature · 3 lines
*Mario Limonciello* Linux Engineer *Dell* | OS Engineering
Signature · 2 lines
Regards Vladimir 'φ-coder/phcoder' Serbinenko
Hi Vladimir:
Quoted 11 lines · Vladimir 'φ-coder/phcoder' Serbinenko
Quoted 8 lines · Mario Limonciello
Hi:
Currently EFI executables don't include
part_msdosor vfat support by default. This means that EFI executables can only be launched directly from ISO9660 filesystems. The attached patch explicitly addspart_msdosand vfat so that the rest of the GRUB files can be found on other devices, such as USB keys.grub-mkrescue is only for creating ISOs. If you need to install to HDD please use grub-install. For custom EFI executables use grub-mkimage
The reason for adding this to the EFI executable on ISOs is so that those same ISOs can be installed to a VFAT USB stick and that USB stick bootable via EFI. The particular use case i'm thinking about is Ubuntu's usb-creator. It extracts the ISO directly to the stick. If the EFI executable contains these two modules, no additional work is necessary.
Signature · 3 lines
*Mario Limonciello* Linux Engineer *Dell*| OS Engineering