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

Angelos Tzotsos gcpp.kalxas at gmail.com
Tue Dec 6 08:12:13 PST 2016 

Hi all,

A new build is available including the code from Ben's pull request:
http://aiolos.survey.ntua.gr/gisvm/dev/osgeo-live-nightly-build4-amd64-6875128.iso

Cheers,
Angelos

On 12/06/2016 06:01 PM, Johan Van de Wauw wrote:
> If a version is ready, I can test it on a few devices.
>
> On Tue, Dec 6, 2016 at 4:45 PM, Brian M Hamlin <maplabs at light42.com> wrote:
>>   Hi All
>>
>>    this  line of build steps looks promising .. my own small investigations into the UEFI boot process raised more questions than answers, so I am grateful to see a new set of resources applied to the problem.
>>
>>    Specifically, I had not seen nor heard of,  GNU xorriso, and  I had not gone through Ticket #1761 in detail.
>>
>>    great news, and I will make time to test a bit soon
>>    best from Berkeley, California
>>     --Brian
>>
>>
>>   On Tue, 6 Dec 2016 20:55:17 +1100, Cameron Shorter  wrote:
>>
>> Sounds promising Ben.
>>
>> Looks like size won't be an issue with what you are proposing.
>>
>> I'd be interested to hear if Brian has any comments. Brian has burned a
>> lot of USBs for prior conferences and might have some feedback on things
>> to look out for.
>>
>> Cheers, Cameron
>>
>> On 6/12/2016 3:54 PM, Ben Caradoc-Davies wrote:
>>> Cameron,
>>>
>>> in my first test, isohybrid and UEFI support increases the size of the
>>> ISO image by only 411648 bytes.
>>>
>>> Kind regards,
>>> Ben.
>> On 6/12/2016 4:08 PM, 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,
>>>>>>
>>>>>
>> --
>> Cameron Shorter
>> M +61 419 142 254
>>
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-- 
Angelos Tzotsos, PhD
OSGeo Charter Member
http://users.ntua.gr/tzotsos

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