[PATCH] Explicitly build msdos partition support into EFI executables

[PATCH] Explicitly build msdos partition support into EFI executables

[Mario Limonciello]

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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,

-- 
*Mario Limonciello*
Linux Engineer
*Dell*| OS Engineering

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=== modified file 'ChangeLog'
--- ChangeLog	2011-01-05 11:23:06 +0000
+++ ChangeLog	2011-01-05 16:41:49 +0000
@@ -1,3 +1,8 @@
+2011-01-06  Mario Limonciello <Mario_Limonciello@Dell.com>
+
+        * util/grub-mkrescue.in: Explicitly build part_msdos and vfat into
+        efi executables.
+
 2011-01-05  Vladimir Serbinenko  <phcoder@gmail.com>
 
 	Run terminfo_cls on initing terminfo output to clear the screen and

=== modified file 'util/grub-mkrescue.in'
--- util/grub-mkrescue.in	2010-10-18 20:50:01 +0000
+++ util/grub-mkrescue.in	2011-01-05 16:41:49 +0000
@@ -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 ::/

Re: [PATCH] Explicitly build msdos partition support into EFI executables

[KESHAV P.R.]

On Wed, Jan 5, 2011 at 22:15, Mario Limonciello
<Mario_Limonciello@dell.com> wrote:
> 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.
>
part_gpt should also be included (after all GPT is part of UEFI spec).
> Thanks,
>
> --
> Mario Limonciello
> Linux Engineer
> Dell | OS Engineering
>
> _______________________________________________
> Grub-devel mailing list
> Grub-devel@gnu.org
> http://lists.gnu.org/mailman/listinfo/grub-devel
>
>

- Keshav

Re: [PATCH] Explicitly build msdos partition support into EFI executables

[Vladimir 'φ-coder/phcoder' Serbinenko]

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On 01/05/2011 05:45 PM, Mario Limonciello wrote:
> 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.
>
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
> Thanks,
>
> -- 
> *Mario Limonciello*
> Linux Engineer
> *Dell* | OS Engineering


-- 
Regards
Vladimir 'φ-coder/phcoder' Serbinenko



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Re: [PATCH] Explicitly build msdos partition support into EFI executables

[Mario Limonciello]

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Hi Vladimir:

On 01/06/2011 08:45 AM, Vladimir 'φ-coder/phcoder' Serbinenko wrote:
> On 01/05/2011 05:45 PM, Mario Limonciello wrote:
>> 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.
>>
> 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.

-- 
*Mario Limonciello*
Linux Engineer
*Dell*| OS Engineering

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