Hi,
i did with the current snapshot of xorriso-1.2.9 with version timestamp
2013.05.07.185653 :
xorriso -indev /dvdbuffer/debian-7.0.0-amd64-netinst.iso -toc
to learn
...
Volume id : 'Debian 7.0.0 amd64 1'
...
Boot record : El Torito , ISOLINUX isohybrid MBR pointing to boot image
Boot catalog : '/isolinux/boot.cat'
Boot image : '/isolinux/isolinux.bin' , boot_info_table=on
Boot image : '/boot/grub/efi.img' , platform_id=0xEF
Then i repacked the image by
dd if=/dvdbuffer/debian-7.0.0-amd64-netinst.iso bs=512 count=1 \
of=/dvdbuffer/debian-7.0.0-amd64-netinst.mbr
mount -o loop /dvdbuffer/debian-7.0.0-amd64-netinst.iso /mnt
xorriso -as mkisofs \
-o /dvdbuffer/debian7_repacked.iso \
-isohybrid-mbr /dvdbuffer/debian-7.0.0-amd64-netinst.mbr \
-c /isolinux/boot.cat \
-b /isolinux/isolinux.bin \
-no-emul-boot -boot-load-size 4 -boot-info-table \
-eltorito-alt-boot \
-e /boot/grub/efi.img \
-no-emul-boot -isohybrid-gpt-basdat \
-V 'Debian 7.0.0 amd64 1' /mnt
On my Debian 6.0.2 test system i submitted both images to gdisk:
# gdisk debian-7.0.0-amd64-netinst.iso
...
MBR: MBR only
BSD: not present
APM: not present
GPT: not present
...
Found invalid GPT and valid MBR; converting MBR to GPT format.
...
# gdisk debian7_repacked.iso
...
MBR: MBR only
BSD: not present
APM: not present
GPT: present
...
So it seems that at least gdisk was complaining about the GPT
checksum bug of xorriso-1.2.[68].
I have to thank Vladimir Serbinenko who spotted it in april.
This snapshot is available as
http://www.gnu.org/software/xorriso/xorriso-1.2.9.tar.gz
(For Jigdo support you need zlib development headers "zlib-dev"
installed.)
Have a nice day :)
Thomas
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