thr3ads.net - Syslinux - [syslinux] isohybrid --mac doesn't find the mac efi image [Feb 2014]

If this information is useful, please help other people find it:
Share via:

Fernando Reyes

2014-Feb-08 19:37 UTC

[syslinux] isohybrid --mac doesn't find the mac efi image

I posted this on the bugzilla page but I figured that on the mailing
list it would get more attention. Please see
http://bugzilla.syslinux.org/show_bug.cgi?id=49 for a description of my
current issue.

-- 
Thank you,
Fernando Reyes
GPG BDD75DD7
Mission Accomplish, Inc.
http://missionaccomplish.com
Email:design at missionaccomplish.com
Tel: 7187100008
Cell: 3479275477

Thomas Schmitt

2014-Feb-08 22:09 UTC

head link

[syslinux] isohybrid --mac doesn't find the mac efi image

Hi,
> http://bugzilla.syslinux.org/show_bug.cgi?id=49
The xorriso run shown there would nearly suffice to leave
out the run of isohybrid --mac.
One would just have to attribute -isohybrid-apm-hfsplus to
-e boot/macboot.img.

I re-arranged your options to emphasize which ones apply
to particular boot images:

xorriso -as mkisofs -J -R -l -V UEFI_TESTING \
-o ../image.iso \
-isohybrid-mbr /usr/share/syslinux/isohdpfx.bin \
-c isolinux/boot.cat \
-b isolinux/isolinux.bin \
-no-emul-boot -boot-load-size 4 -boot-info-table \
-eltorito-alt-boot \
-e boot/efiboot.img \
-no-emul-boot -isohybrid-gpt-basdat -isohybrid-apm-hfsplus \
-eltorito-alt-boot \
-e boot/macboot.img \
-no-emul-boot -isohybrid-gpt-basdat -isohybrid-apm-hfsplus \
../cdmaster

I am not sure whether it is appropriate to apply -isohybrid-apm-hfsplus
to efiboot.img. But that's what the inventor of this setup describes in
http://mjg59.dreamwidth.org/11285.html
and what isohybrid.c does in initialise_apm().

--------------------------------------------------------------

As for the failed isohybrid run:
> # isohybrid --uefi --mac image.iso
> isohybrid: image.iso: unable to find mac efi image
http://git.kernel.org/cgit/boot/syslinux/syslinux.git/tree/utils/isohybrid.c?id=syslinux-6.03-pre1

Line 978 gets executed if read_efi_section() did not see an
El Torito Section Header with platform id 0xef.
It expects such a header after having already seen one, that
was followed by a Section Entry which described efiboot.img.

AFAIK, mjg creates Fedora-LiveCD.iso by help of an enhanced
genisoimage, which knows option -e. Probably, isohybrid.c
relies on the output of this program.

To my interpretation of El Torito specs, there should not be
one Section Header per Section Entry as long as the entries
belong to the same platform id and id string. El Torito 1.0 states:
"2.3 Section Header
If the CD was created for a machine with a BIOS incorporating this
specification, the Section Header precedes a group of entries from
which the BIOS may boot the computer. The section header has an
identification string. If the BIOS understands the ID, string it
may choose to boot the system using one of these entries in place
of the INITIAL/DEFAULT entry."
(INITIAL/DEFAULT entry describes isolinux.bin, with platform id 0
= "80x86". Actually this means PC-BIOS.)

So probably isohybrid.c should look in the Section Header at
byte offset 2 for the 16-bit little-endian count of Section Entries.
If it is 2, then it can directly call read_efi_catalogue(), to get
the mac_lba.

The code which causes xorriso to produce a section with two
entries is in
libisofs/eltorito.c, function catalog_open()
It should suffice to replace the loop
for (j = i + 1; j < cat->num_bootimages; j++) {
...
}
by
j = i + 1;
to get one entry per section.

But before i implement an option for that, i'd like to see a better
reason, than just isohybrid.c expecting it. (It also expects that
512 == 2048 and that C compilers by miracle know that a string
constant is actually meant as UFT-16 characters.)

I am open for learning that it is worth to be done.

Have a nice day :)

Thomas

Thomas Schmitt

2014-Feb-08 22:40 UTC

head link

[syslinux] isohybrid --mac doesn't find the mac efi image

Hi,

it comes to me that there is already an option which can
be used to enforce a new Section Header before the entry
which describes macboot.img.

Option -eltorito-id can be used to set the Id String of the
Section Header of the current boot image.
efiboot.img is to be stored under the default Id String of 28
0-bytes. So a new Section Header will emerge, if macboot.img
gets attributed a different Id String:

  ...
  -eltorito-alt-boot \
  -e boot/macboot.img \
     -eltorito-id "MAC" \
     -no-emul-boot -isohybrid-gpt-basdat -isohybrid-apm-hfsplus \
  ...


Have a nice day :)

Thomas

Fernando Reyes

2014-Feb-09 02:41 UTC

head link

[syslinux] isohybrid --mac doesn't find the mac efi image

On 02/08/14 17:40, Thomas Schmitt wrote:> -eltorito-id "MAC" \thanks a lot, that seems to allow isohybrid --mac to work \o/

for the curious this is the image before and after isohybrid as shown by
gparted

* output from xorriso

xorriso 1.3.2 : RockRidge filesystem manipulator, libburnia project.

Drive current: -outdev 'stdio:../image.iso'
Media current: stdio file, overwriteable
Media status : is blank
Media summary: 0 sessions, 0 data blocks, 0 data, 16.5g free
Added to ISO image: directory '/'='/chroot/livecd32/real-small'
xorriso : UPDATE : 36 files added in 1 seconds
xorriso : UPDATE : 36 files added in 1 seconds
xorriso : NOTE : Copying to System Area: 432 bytes from file
'/usr/share/syslinux/isohdpfx.bin'
libisofs: NOTE : Aligned image size to cylinder size by 80 blocks
xorriso : UPDATE :  40.00% done
ISO image produced: 20480 sectors
Written to medium : 20480 sectors at LBA 0
Writing to 'stdio:../image.iso' completed successfully.

* output from gdisk -l image.iso showing both MBR and GPT layouts

# gdisk -l ../image.iso
GPT fdisk (gdisk) version 0.8.6

Partition table scan:
  MBR: MBR only
  BSD: not present
  APM: not present
  GPT: present

Found valid MBR and GPT. Which do you want to use?
 1 - MBR
 2 - GPT
 3 - Create blank GPT

Your answer: 2
Using GPT and creating fresh protective MBR.
Warning! Main partition table overlaps the first partition by 64 blocks!
You will need to delete this partition or resize it in another utility.
Disk ../image.iso: 83968 sectors, 41.0 MiB
Logical sector size: 512 bytes
Disk identifier (GUID): 0C3C93F0-74AE-430E-B40C-7066F358BC7D
Partition table holds up to 192 entries
First usable sector is 64, last usable sector is 83918
Partitions will be aligned on 8-sector boundaries
Total free space is 3 sectors (1.5 KiB)

Number  Start (sector)    End (sector)  Size       Code  Name
   2            2232           42551   19.7 MiB    0700  ISOHybrid2
   3           42552           52615   4.9 MiB     0700  ISOHybrid1

# gdisk -l ../image.iso
GPT fdisk (gdisk) version 0.8.6

Partition table scan:
  MBR: MBR only
  BSD: not present
  APM: not present
  GPT: present

Found valid MBR and GPT. Which do you want to use?
 1 - MBR
 2 - GPT
 3 - Create blank GPT

Your answer: 1
Entering GPTPart::SetName(const UnicodeString...)
Entering GPTPart::SetName(const UnicodeString...)
Disk ../image.iso: 83968 sectors, 41.0 MiB
Logical sector size: 512 bytes
Disk identifier (GUID): F40ECEDC-A44C-49B1-AC22-CE710DD89E42
Partition table holds up to 128 entries
First usable sector is 34, last usable sector is 83934
Partitions will be aligned on 8-sector boundaries
Total free space is 33517 sectors (16.4 MiB)

Number  Start (sector)    End (sector)  Size       Code  Name
   2           42552           52615   4.9 MiB     EF00  EFI System
   3            2232           42551   19.7 MiB    EF00  EFI System

* xorriso -index image.iso -toc

xorriso 1.3.2 : RockRidge filesystem manipulator, libburnia project.

xorriso : NOTE : Loading ISO image tree from LBA 0
xorriso : UPDATE : 36 nodes read in 1 seconds
xorriso : NOTE : Detected El-Torito boot information which currently is
set to be discarded
Drive current: -indev 'image.iso'
Media current: stdio file, overwriteable
Media status : is written , is appendable
Boot record  : El Torito , ISOLINUX isohybrid MBR pointing to boot image
Media summary: 1 session, 20992 data blocks, 41.0m data, 16.2g free
Volume id    : 'UEFI_TESTING'
Drive current: -indev 'image.iso'
Drive type   : vendor 'YOYODYNE' product 'WARP DRIVE' revision
'FX01'
Media current: stdio file, overwriteable
Media status : is written , is appendable
Media blocks : 20992 readable , 8492956 writable , 8513948 overall
Boot record  : El Torito , ISOLINUX isohybrid MBR pointing to boot image
Boot catalog : '/isolinux/boot.cat'
Boot image   : '/isolinux/isolinux.bin' , boot_info_table=on
Boot image   : '/boot/efiboot.img' , platform_id=0xEF
Boot image   : '/boot/macboot.img' , platform_id=0xEF
TOC layout   : Idx ,  sbsector ,       Size , Volume Id
ISO session  :   1 ,         0 ,     20992s , UEFI_TESTING
Media summary: 1 session, 20992 data blocks, 41.0m data, 16.2g free
Media nwa    : 20992s

* output after running isohybrid --uefi --mac

# gdisk -l image.iso
GPT fdisk (gdisk) version 0.8.6

Partition table scan:
  MBR: MBR only
  BSD: not present
  APM: not present
  GPT: present

Found valid MBR and GPT. Which do you want to use?
 1 - MBR
 2 - GPT
 3 - Create blank GPT

Your answer: 1
Entering GPTPart::SetName(const UnicodeString...)
Disk image.iso: 86016 sectors, 42.0 MiB
Logical sector size: 512 bytes
Disk identifier (GUID): 6BE2F352-0635-4F67-9851-084496302983
Partition table holds up to 128 entries
First usable sector is 34, last usable sector is 85982
Partitions will be aligned on 8-sector boundaries
Total free space is 75885 sectors (37.1 MiB)

Number  Start (sector)    End (sector)  Size       Code  Name
   2           42552           52615   4.9 MiB     EF00  EFI System

# gdisk -l image.iso
GPT fdisk (gdisk) version 0.8.6

Partition table scan:
  MBR: MBR only
  BSD: not present
  APM: not present
  GPT: present

Found valid MBR and GPT. Which do you want to use?
 1 - MBR
 2 - GPT
 3 - Create blank GPT

Your answer: 2
Using GPT and creating fresh protective MBR.
Warning! Main partition table overlaps the first partition by 48 blocks!
You will need to delete this partition or resize it in another utility.
Disk image.iso: 86016 sectors, 42.0 MiB
Logical sector size: 512 bytes
Disk identifier (GUID): C1D60C7A-AC2A-4620-ABE3-44D2C60020A0
Partition table holds up to 128 entries
First usable sector is 48, last usable sector is 85982
Partitions will be aligned on 8-sector boundaries
Total free space is 2014 sectors (1007.0 KiB)

Number  Start (sector)    End (sector)  Size       Code  Name
   2           42552           52615   4.9 MiB     0700  ????????d????e????
   3            2232           42551   19.7 MiB    AF00  ????????d????e????

ok, I don't know what that garble text is above. I hope this answers
your questions. Thanks for the support.






-- 
Thank you,
Fernando Reyes
GPG BDD75DD7
Mission Accomplish, Inc.
http://missionaccomplish.com
Email:design at missionaccomplish.com
Tel: 7187100008
Cell: 3479275477

Thomas Schmitt

2014-Feb-10 12:41 UTC

head link

[syslinux] isohybrid --mac doesn't find the mac efi image

Hi,

email at missionaccomplish.com wrote:> We been trying to boot the image in vbox using efi emulation but it
> complains about kernel not supporting handover.
If it complains about a kernel then it should be past El Torito
or GPT. The job of xorriso is to point BIOS and EFI to their
boot images. Everything else is in the scope of the boot images
resp. the operating system that shall finally come up.

> P.S the latest fedora ISO seems to boot fine in vbox perhaps you
> might want to look at their image. Enjoy the rest of your weekend.
You could try to re-pack it by a xorriso command like yours.
Use

  xorriso -indev ...imagefile...iso -toc

to learn about the "Boot image" files and the "Volume id",
which you will have to use in the xorriso run.
E.g. with an old Fedora-LiveCD.iso this would be

  Drive current: -indev 'Fedora-LiveCD.iso'
  ...
  Volume id    : 'Fedora-LiveCD'
  ...
  Boot record  : El Torito , ISOLINUX isohybrid MBR pointing to boot image
  ...
  Boot image   : '/isolinux/isolinux.bin' , boot_info_table=on
  Boot image   : '/isolinux/efiboot.img' , platform_id=0xEF 
  Boot image   : '/isolinux/macboot.img' , platform_id=0xEF 

Extract the MBR file for -isohybrid-mbr by

  dd if=Fedora-LiveCD.iso bs=512 count=1 of=/tmp/extracted.mbr

and use a path to it as parameter of -isohybrid-mbr.
Use the mounted original ISO as input directory.
E.g.:

  mount -o loop Fedora-LiveCD.iso /mnt/fedora_iso

  xorriso -as mkisofs -J -R -l -V 'Fedora-LiveCD' \
  -o ../image.iso \
  -isohybrid-mbr /tmp/extracted.mbr \
  -c isolinux/boot.cat \
  -b isolinux/isolinux.bin \
     -no-emul-boot -boot-load-size 4 -boot-info-table \
  -eltorito-alt-boot \
  -e isolinux/efiboot.img \
     -no-emul-boot -isohybrid-gpt-basdat -isohybrid-apm-hfsplus \
  -eltorito-alt-boot \
  -e isolinux/macboot.img \
     -no-emul-boot -isohybrid-gpt-basdat -isohybrid-apm-hfsplus \
  /mnt/fedora_iso

If this works as good or bad as the original, then xorriso does
its job as expectable. If the repacked image fails, tell me the
URL of the original which you used.

Have a nice day :)

Thomas

Fernando Reyes

2014-Feb-10 23:09 UTC

head link

[syslinux] isohybrid --mac doesn't find the mac efi image

On 02/10/14 07:41, Thomas Schmitt wrote:> Hi,
>
> email at missionaccomplish.com wrote:
>> We been trying to boot the image in vbox using efi emulation but it
>> complains about kernel not supporting handover.
> If it complains about a kernel then it should be past El Torito
> or GPT. The job of xorriso is to point BIOS and EFI to their
> boot images. Everything else is in the scope of the boot images
> resp. the operating system that shall finally come up.
>
>
>> P.S the latest fedora ISO seems to boot fine in vbox perhaps you
>> might want to look at their image. Enjoy the rest of your weekend.
> You could try to re-pack it by a xorriso command like yours.
> Use
>
>   xorriso -indev ...imagefile...iso -toc
>
> to learn about the "Boot image" files and the "Volume
id",
> which you will have to use in the xorriso run.
> E.g. with an old Fedora-LiveCD.iso this would be
>
>   Drive current: -indev 'Fedora-LiveCD.iso'
>   ...
>   Volume id    : 'Fedora-LiveCD'
>   ...
>   Boot record  : El Torito , ISOLINUX isohybrid MBR pointing to boot image
>   ...
>   Boot image   : '/isolinux/isolinux.bin' , boot_info_table=on
>   Boot image   : '/isolinux/efiboot.img' , platform_id=0xEF 
>   Boot image   : '/isolinux/macboot.img' , platform_id=0xEF 
>
> Extract the MBR file for -isohybrid-mbr by
>
>   dd if=Fedora-LiveCD.iso bs=512 count=1 of=/tmp/extracted.mbr
>
> and use a path to it as parameter of -isohybrid-mbr.
> Use the mounted original ISO as input directory.
> E.g.:
>
>   mount -o loop Fedora-LiveCD.iso /mnt/fedora_iso
>
>   xorriso -as mkisofs -J -R -l -V 'Fedora-LiveCD' \
>   -o ../image.iso \
>   -isohybrid-mbr /tmp/extracted.mbr \
>   -c isolinux/boot.cat \
>   -b isolinux/isolinux.bin \
>      -no-emul-boot -boot-load-size 4 -boot-info-table \
>   -eltorito-alt-boot \
>   -e isolinux/efiboot.img \
>      -no-emul-boot -isohybrid-gpt-basdat -isohybrid-apm-hfsplus \
>   -eltorito-alt-boot \
>   -e isolinux/macboot.img \
>      -no-emul-boot -isohybrid-gpt-basdat -isohybrid-apm-hfsplus \
>   /mnt/fedora_iso
>
> If this works as good or bad as the original, then xorriso does
> its job as expectable. If the repacked image fails, tell me the
> URL of the original which you used.
>
>
> Have a nice day :)
>
> Thomas
>Greetings Thomas,

        Hope you had a good weekend! here is the update on my UEFI
venture. It seems that omitting the -isohybrid-mbr,-isohybrid-gpt-basdat
& -isohybrid-apm-hfsplus from both efiboot.img and macboot.img and just
allowing isohybrid set all that works well. I have created two images
which include and exclude these parameters and below is the output data.

Image created without the use of /usr/bin/isohybrid:

# xorriso -indev .uefi-testing.iso -toc
xorriso 1.3.2 : RockRidge filesystem manipulator, libburnia project.

xorriso : NOTE : Loading ISO image tree from LBA 0
xorriso : UPDATE : 36 nodes read in 1 seconds
xorriso : NOTE : Detected El-Torito boot information which currently is
set to be discarded
Drive current: -indev 'uefi-testing.iso'
Media current: stdio file, overwriteable
Media status : is written , is appendable
Boot record  : El Torito , ISOLINUX isohybrid MBR pointing to boot image
Media summary: 1 session, 20992 data blocks, 41.0m data, 33.9g free
Volume id    : 'EUFI-TESTING'
Drive current: -indev 'uefi-testing.iso'
Drive type   : vendor 'YOYODYNE' product 'WARP DRIVE' revision
'FX01'
Media current: stdio file, overwriteable
Media status : is written , is appendable
Media blocks : 20992 readable , 17767882 writable , 17788874 overall
Boot record  : El Torito , ISOLINUX isohybrid MBR pointing to boot image
Boot catalog : '/isolinux/boot.cat'
Boot image   : '/isolinux/isolinux.bin' , boot_info_table=on
Boot image   : '/boot/efiboot.img' , platform_id=0xEF
Boot image   : '/boot/macboot.img' , platform_id=0xEF
TOC layout   : Idx ,  sbsector ,       Size , Volume Id
ISO session  :   1 ,         0 ,     20992s , EUFI-TESTING
Media summary: 1 session, 20992 data blocks, 41.0m data, 33.9g free
Media nwa    : 20992s

# gdisk -l uefi-testing.iso
GPT fdisk (gdisk) version 0.8.6

Partition table scan:
  MBR: MBR only
  BSD: not present
  APM: not present
  GPT: present

Found valid MBR and GPT. Which do you want to use?
 1 - MBR
 2 - GPT
 3 - Create blank GPT

Your answer: 1
Entering GPTPart::SetName(const UnicodeString...)
Entering GPTPart::SetName(const UnicodeString...)
Disk uefi-testing.iso: 83968 sectors, 41.0 MiB
Logical sector size: 512 bytes
Disk identifier (GUID): 11EA0059-DA17-4E30-8F64-5FD247730C9B
Partition table holds up to 128 entries
First usable sector is 34, last usable sector is 83934
Partitions will be aligned on 8-sector boundaries
Total free space is 33517 sectors (16.4 MiB)

Number  Start (sector)    End (sector)  Size       Code  Name
   2           42552           52615   4.9 MiB     EF00  EFI System
   3            2232           42551   19.7 MiB    EF00  EFI System

# gdisk -l uefi-testing.iso
GPT fdisk (gdisk) version 0.8.6

Partition table scan:
  MBR: MBR only
  BSD: not present
  APM: not present
  GPT: present

Found valid MBR and GPT. Which do you want to use?
 1 - MBR
 2 - GPT
 3 - Create blank GPT

Your answer: 2
Using GPT and creating fresh protective MBR.
Warning! Main partition table overlaps the first partition by 64 blocks!
You will need to delete this partition or resize it in another utility.
Disk uefi-testing.iso: 83968 sectors, 41.0 MiB
Logical sector size: 512 bytes
Disk identifier (GUID): 133588D1-CEF0-4861-8539-EC28C5D15E07
Partition table holds up to 192 entries
First usable sector is 64, last usable sector is 83918
Partitions will be aligned on 8-sector boundaries
Total free space is 3 sectors (1.5 KiB)

Number  Start (sector)    End (sector)  Size       Code  Name
   2            2232           42551   19.7 MiB    0700  ISOHybrid2
   3           42552           52615   4.9 MiB     0700  ISOHybrid1

A url to the first 64k of the image is located at
http://77.110.8.68/64kb.img

Now for the image that ommitted the -isohybrid-mbr,-isohybrid-gpt-basdat
& -isohybrid-apm-hfsplus options and used /usr/bin/isohybrid to produce
the hybrid image.

 # xorriso -indev uefi-testing.iso -toc
xorriso 1.3.2 : RockRidge filesystem manipulator, libburnia project.

xorriso : NOTE : Loading ISO image tree from LBA 0
xorriso : UPDATE : 36 nodes read in 1 seconds
xorriso : NOTE : Detected El-Torito boot information which currently is
set to be discarded
Drive current: -indev 'uefi-testing.iso'
Media current: stdio file, overwriteable
Media status : is written , is appendable
Boot record  : El Torito , ISOLINUX isohybrid MBR pointing to boot image
Media summary: 1 session, 20644 data blocks, 40.3m data, 33.9g free
Volume id    : 'EUFI-TESTING'
Drive current: -indev 'uefi-testing.iso'
Drive type   : vendor 'YOYODYNE' product 'WARP DRIVE' revision
'FX01'
Media current: stdio file, overwriteable
Media status : is written , is appendable
Media blocks : 20672 readable , 17767864 writable , 17788536 overall
Boot record  : El Torito , ISOLINUX isohybrid MBR pointing to boot image
Boot catalog : '/isolinux/boot.cat'
Boot image   : '/isolinux/isolinux.bin' , boot_info_table=on
Boot image   : '/boot/efiboot.img' , platform_id=0xEF
Boot image   : '/boot/macboot.img' , platform_id=0xEF
TOC layout   : Idx ,  sbsector ,       Size , Volume Id
ISO session  :   1 ,         0 ,     20644s , EUFI-TESTING
Media summary: 1 session, 20644 data blocks, 40.3m data, 33.9g free
Media nwa    : 20672s

# gdisk -l uefi-testing.iso
GPT fdisk (gdisk) version 0.8.6

Partition table scan:
  MBR: MBR only
  BSD: not present
  APM: not present
  GPT: present

Found valid MBR and GPT. Which do you want to use?
 1 - MBR
 2 - GPT
 3 - Create blank GPT

Your answer: 1
Entering GPTPart::SetName(const UnicodeString...)
Disk uefi-testing.iso: 83968 sectors, 41.0 MiB
Logical sector size: 512 bytes
Disk identifier (GUID): 46D66056-FE29-436E-A134-526503F2692C
Partition table holds up to 128 entries
First usable sector is 34, last usable sector is 83934
Partitions will be aligned on 8-sector boundaries
Total free space is 73837 sectors (36.1 MiB)

Number  Start (sector)    End (sector)  Size       Code  Name
   2           42552           52615   4.9 MiB     EF00  EFI System

# gdisk -l uefi-testing.iso
GPT fdisk (gdisk) version 0.8.6

Partition table scan:
  MBR: MBR only
  BSD: not present
  APM: not present
  GPT: present

Found valid MBR and GPT. Which do you want to use?
 1 - MBR
 2 - GPT
 3 - Create blank GPT

Your answer: 2
Using GPT and creating fresh protective MBR.
Warning! Main partition table overlaps the first partition by 48 blocks!
You will need to delete this partition or resize it in another utility.
Disk uefi-testing.iso: 83968 sectors, 41.0 MiB
Logical sector size: 512 bytes
Disk identifier (GUID): 409938D0-D109-42D3-8392-5D59B35D53A1
Partition table holds up to 128 entries
First usable sector is 48, last usable sector is 83934
Partitions will be aligned on 8-sector boundaries
Total free space is 1358 sectors (679.0 KiB)

Number  Start (sector)    End (sector)  Size       Code  Name
   2           42552           52615   4.9 MiB     0700  ????????d????e????
   3            2232           42551   19.7 MiB    AF00  ????????d????e????

Notice we don't have an APM table in both images and it's still
complaining about the overlap from main partition.

Here we go again with that 8bit salad which wasn't an issue with the
previous image. The 64kb link to this image is at
http://77.110.8.68/64kb-1.img

So far both images will boot in EFI mode using vbox but I yet to test
with usb booting or optical media. I will have some of those test
results on my next email along with the hardware used to boot each image.


F.Y.I mjg uses a modified mkisofs not genisoimage, this can be seen at
https://git.fedorahosted.org/cgit/pungi.git/tree/src/pypungi/__init__.py#n1472


Anyways, I hope this data helps with getting to the bottom of things, I
will be around if you need further data and if you want to test the
actual images let me know.

-- 
Thank you,
Fernando Reyes
GPG BDD75DD7
Mission Accomplish, Inc.
http://missionaccomplish.com
Email:design at missionaccomplish.com
Tel: 7187100008
Cell: 3479275477

Maybe Matching Threads

Search for more maybe matching threads

Syslinux - Feb 2014 - isohybrid --mac doesn't find the mac efi image

[syslinux] isohybrid --mac doesn't find the mac efi image

[syslinux] isohybrid --mac doesn't find the mac efi image

[syslinux] isohybrid --mac doesn't find the mac efi image

[syslinux] isohybrid --mac doesn't find the mac efi image

[syslinux] isohybrid --mac doesn't find the mac efi image

[syslinux] isohybrid --mac doesn't find the mac efi image

Maybe Matching Threads