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 <[email protected]>
Director
Transient Software Limited <http://transient.nz/>
New Zealand
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