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

[Ben Caradoc-Davies]

Cameron,

in my first test, isohybrid and UEFI support increases the size of the 
ISO image by only 411648 bytes.

Kind regards,
Ben.

On 06/12/16 07:25, Ben Caradoc-Davies wrote:
> Cameron,
>
> I expect that the additional boot equipment will increase the size of
> the ISO by a only a small amount. Do we need to add these packages to
> the final ISO? I will test and report back.
>
> Kind regards,
> Ben.
>
> On 04/12/16 22:12, Cameron Shorter wrote:
>> Hi Ben,
>>
>> Your proposal sounds like a good idea, although I have to confess that I
>> don't know enough about building USBs contribute in a meaningful way to
>> the discussion.
>>
>> Are you able to confirm that adding these extra packages will not add
>> much size to the final OSGeo-Live ISO?
>>
>> And that there is not likely to be any adverse side effects by the
>> additions?
>>
>> I'd be interested to hear if Angelos has an opinion on this.
>>
>> Warm regards, Cameron
>>
>>
>> On 2/12/2016 10:16 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,
>>>
>>
>

-- 
Ben Caradoc-Davies <ben at transient.nz>
Director
Transient Software Limited <http://transient.nz/>
New Zealand