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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