[Live-demo] ISO not isohybrid, lacks UEFI support

Tue Dec 6 02:10:54 PST 2016

Thank you Ben,

The fix looks straightforward.
This PR will be included in the next nightly so we can test.

Cheers,
Angelos

On 12/06/2016 07:08 AM, Ben Caradoc-Davies wrote:
> Angelos,
>
> I think I have a working solution:
> https://github.com/OSGeo/OSGeoLive/pull/142
>
> Not yet tested on physical hardware. The ISO should now work after 
> being written to a raw thumb drive with dd, just like the official 
> Ubuntu and Lubuntu ISO images.
>
> All of these boot in QEMU:
>
> QEMU test as "cdrom":
> $ qemu-system-x86_64 -enable-kvm -m 2048 -cdrom 
> osgeo-live-nightly-build6-amd64-ab426ef.iso
>
> QEMU test as MBR boot thumb drive (which boot as first hard disk):
> $ qemu-system-x86_64 -enable-kvm -m 2048 -hda 
> osgeo-live-nightly-build6-amd64-ab426ef.iso ^C
>
> QEMU test as UEFI boot thumb drive (OVMF Tianocore UEFI BIOS):
> $ qemu-system-x86_64 -enable-kvm -m 2048 -bios /usr/share/ovmf/OVMF.fd 
> -hda osgeo-live-nightly-build6-amd64-ab426ef.iso
>
> Boot equipment looks good to me:
>
> $ xorriso -indev osgeo-live-nightly-build6-amd64-ab426ef.iso 
> -report_el_torito plain -report_system_area plain
> xorriso 1.4.6 : RockRidge filesystem manipulator, libburnia project.
>
> xorriso : NOTE : Loading ISO image tree from LBA 0
> xorriso : UPDATE : 502 nodes read in 1 seconds
> xorriso : NOTE : Detected El-Torito boot information which currently 
> is set to be discarded
> Drive current: -indev 'osgeo-live-nightly-build6-amd64-ab426ef.iso'
> Media current: stdio file, overwriteable
> Media status : is written , is appendable
> Boot record  : El Torito , MBR isohybrid cyl-align-off GPT
> Media summary: 1 session, 2069246 data blocks, 4041m data, 7489m free
> Volume id    : 'OSGEOLIVE10'
> El Torito catalog  : 164  1
> El Torito cat path : /isolinux/boot.cat
> El Torito images   :   N  Pltf  B   Emul  Ld_seg  Hdpt Ldsiz         LBA
> El Torito boot img :   1  BIOS  y   none  0x0000  0x00 4         165
> El Torito boot img :   2  UEFI  y   none  0x0000  0x00 4736         185
> El Torito img path :   1  /isolinux/isolinux.bin
> El Torito img opts :   1  boot-info-table isohybrid-suitable
> El Torito img path :   2  /boot/grub/efi.img
> System area options: 0x00000202
> System area summary: MBR isohybrid cyl-align-off GPT
> ISO image size/512 : 8276984
> Partition offset   : 0
> MBR heads per cyl  : 0
> MBR secs per head  : 0
> MBR partition table:   N Status  Type        Start       Blocks
> MBR partition      :   1   0x80  0x00            0      8278016
> MBR partition      :   2   0x00  0xef          740         4736
> MBR partition path :   2  /boot/grub/efi.img
> GPT                :   N  Info
> GPT disk GUID      :      c22a598de644cf4ababebbce02526bc1
> GPT entry array    :      2  128  overlapping
> GPT lba range      :      34  8277982  8278015
> GPT partition name :   1 
> 490053004f004800790062007200690064002000490053004f00
> GPT partname local :   1  ISOHybrid ISO
> GPT partition GUID :   1  ddfce2b743e69e439dd9fd1b0859474c
> GPT type GUID      :   1  a2a0d0ebe5b9334487c068b6b72699c7
> GPT partition flags:   1  0x0000000000000000
> GPT start and size :   1  0  8276984
> GPT partition name :   2  490053004f00480079006200720069006400
> GPT partname local :   2  ISOHybrid
> GPT partition GUID :   2  fd17fc2ba0182c4490c1d617372125de
> GPT type GUID      :   2  a2a0d0ebe5b9334487c068b6b72699c7
> GPT partition flags:   2  0x0000000000000000
> GPT start and size :   2  740  4736
> GPT partition path :   2  /boot/grub/efi.img
>
> Kind regards,
> Ben.
>
>
> On 06/12/16 07:40, Ben Caradoc-Davies wrote:
>> Angelos,
>>
>> I will see if I can get genisoimage+isohybrid to work. If not, I will
>> try xorriso, which seems to be under more active development.
>>
>> Kind regards,
>> Ben.
>>
>> On 04/12/16 23:22, Angelos Tzotsos wrote:
>>> Hi Ben,
>>>
>>> It is a known fact that Ubuntu has switched its build process closer to
>>> the Debian iso build process.
>>> I contacted several Ubuntu developers (specifically those who are
>>> responsible for the iso creation) during our previous dev cycle. 
>>> Here is
>>> the information gathered back then:
>>> https://trac.osgeo.org/osgeo/ticket/1761
>>>
>>> We decided not to switch our build method since this would require too
>>> much effort.
>>>
>>> Now what you propose is something that sounds easier than switching to
>>> the new Ubuntu build process.
>>> Can you please make a pull request to include those extra isohybrid
>>> commands?
>>>
>>> Cheers,
>>> Angelos
>>>
>>> On 12/02/2016 01:16 AM, Ben Caradoc-Davies wrote:
>>>> The current ISO image osgeo-live-10.0-amd64.iso is not isohybrid, and
>>>> lacks UEFI support. As far as I know, all current official Ubuntu live
>>>> images have both. Shipping isohybrid images simplifies USB thumb drive
>>>> creation because the ISO can then be written directly to a raw device
>>>> with dd without needing any other processing, not to mention
>>>> consistency with Ubuntu.
>>>>
>>>> Does anyone object to changing the ISO build process to make isohybrid
>>>> images with UEFI support? This should a matter of a few additional
>>>> xorriso arguments.
>>>>
>>>>
>>>> The current ISO is suitable for MBR isohybrid but lacks UEFI support:
>>>>
>>>> $ isohybrid -u osgeo-live-10.0-amd64.iso
>>>> isohybrid: osgeo-live-10.0-amd64.iso: unable to find efi image
>>>>
>>>>
>>>> The existing boot equipment of the ISO contains only MBR support:
>>>>
>>>> $ xorriso -indev osgeo-live-10.0-amd64.iso -report_el_torito plain
>>>> -report_system_area plain
>>>> xorriso 1.4.6 : RockRidge filesystem manipulator, libburnia project.
>>>>
>>>> xorriso : NOTE : Loading ISO image tree from LBA 0
>>>> xorriso : UPDATE : 502 nodes read in 1 seconds
>>>> xorriso : NOTE : Detected El-Torito boot information which currently
>>>> is set to be discarded
>>>> Drive current: -indev 'osgeo-live-10.0-amd64.iso'
>>>> Media current: stdio file, overwriteable
>>>> Media status : is written , is appendable
>>>> Boot record  : El Torito
>>>> Media summary: 1 session, 2062470 data blocks, 4028m data, 8267m free
>>>> Volume id    : 'OSGEOLIVE10'
>>>> El Torito catalog  : 164  1
>>>> El Torito cat path : /isolinux/boot.cat
>>>> El Torito images   :   N  Pltf  B   Emul  Ld_seg  Hdpt 
>>>> Ldsiz         LBA
>>>> El Torito boot img :   1  BIOS  y   none  0x0000  0x00 4         165
>>>> El Torito img path :   1  /isolinux/isolinux.bin
>>>> El Torito img opts :   1  boot-info-table isohybrid-suitable
>>>> xorriso : NOTE : No System Area was loaded
>>>>
>>>>
>>>> Kind regards,
>>>>
>>>
>>>
>>
>

-- 
Angelos Tzotsos, PhD
OSGeo Charter Member
http://users.ntua.gr/tzotsos