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Re: xorriso and EFI boot images
From: |
Vladimir 'φ-coder/phcoder' Serbinenko |
Subject: |
Re: xorriso and EFI boot images |
Date: |
Tue, 20 Apr 2010 13:55:24 +0200 |
User-agent: |
Mozilla-Thunderbird 2.0.0.22 (X11/20091109) |
Thomas Schmitt wrote:
> Hi,
>
> i took a look at grub-mkrescue.in with EFI and
> implemented the EFI-only case in xorriso-0.5.5
> timestamp 2010.04.20.103448:
>
>
Thanks, will test it later today.
> --efi-boot FILE Set El Torito EFI boot image name and type
>
> Currently -b and --efi-boot override each other.
> Who comes last will win.
> --efi-boot is not yet immune against subsequent
> -boot-info-table. It disables eventual previous
> -boot-info-table, though.
>
> Due to an allergic reaction in libisofs, older
> versions of xorriso are not be able to load
> ISO images with boot catalog signature other than
> 0 ("80x86").
>
> ------------------------------------------------
>
>
> Next i will have to extend the libisofs model of
> a single boot image to a model that can represent
> an El Torito Multiple Boot-Image configuration.
>
>
> But i have scruples about the semantics of
> Platform ID which is global to the whole boot
> catalog.
It's not. The value in validation entry applies only to default image.
Section header specifies the platform id of section entry (byte 1 of
section header entry)
> If yes: how do platforms 0x01 (Power PC) and
> 0x02 (Mac) fit in there ?
>
>
I wonder how these platform fit in spec at all. AFAIR PowerPC Macs use
HFS(+). Idr seeing any eltorito PPC Mac bootable CDs.
> -------------------------------------------------
>
>
> Development of grub-mkrescue and xorriso:
>
> Since we develop and fulfill new demands of
> grub-mkrescue towards xorriso, we will need a
> way to detect whether the locally installed
> xorriso is able to fulfill them.
>
>
> I can offer two ways for that:
>
> - xorriso -version
> reports lines
> xorriso version : 0.5.4
> Version timestamp : 2010.04.19.080001
> by which one can determine the development
> state.
>
> - xorriso -as mkisofs -help 2>&1
> reports available commands.
> My own test version of grub-mkrescue 1.98 uses
> this to handle genisoimage, grub-mkisofs and
> xorriso.
> This method is also used by my tool scdbackup
> for using a mkisofs range of 10 years, and a
> xorriso range of 2 years.
>
>
What about checking error status of xorrisofs --foo -o dummy.iso dummy/ ?
> Have a nice day :)
>
> Thomas
>
>
>
> _______________________________________________
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> address@hidden
> http://lists.gnu.org/mailman/listinfo/grub-devel
>
>
--
Regards
Vladimir 'φ-coder/phcoder' Serbinenko
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