[syslinux] syslinux mkisofs hard-disk-boot isohybrid

[Didier Spaier]

Le 22/12/2016 à 08:53, Pascal via Syslinux a écrit :
> when you say """ Unfortunately, syslinux.efi v.6.03 is not capable of
> booting optical """, you talk about isolinux.bin ?
> 
> because my iso image with a "good" alternate eltorito boot image (eg. "uefi
> ready") is booting with qemu (qemu -cdrom core.iso -bios uefi.fd) and is
> also booting in hard disk mode (qemu -hda core.iso -bios uefi.fd).
>

The issue is the inability of booting of a *physical* (not virtual) optical
media, like for instance a DVD or a CD, using syslinux.efi.

Didier

> Le mercredi 21 décembre 2016, Ady Ady via Syslinux <syslinux at zytor.com> a
> écrit :
> 
>>
>>> hello every body,
>>>
>>> I'm trying to build an isohybrid image based on syslinux able to boot on
>>> bios and uefi with optical disk or usb key.
>>>
>>> I've build a 16Mb hard disk image (core.img) with necessary parts for
>> bios
>>> (legacy bootable partition, protective mbr, gptmbr.bin & syslinux
>>> installation) and for uefi (gpt, esp, /efi/boot/bootx64.efi & syslinux
>>> files).
>>>
>>> my hard disk image is ok - eg. bootable - with qemu on bios and uefi
>>> (vmlinux & core.gz from tinylinux 7.2 are used).
>>>
>>> I've generated an iso image with :
>>>
>>> mkisofs -o core.iso -b boot/core.img -c boot/boot.cat -hard-disk-boot
>> core/
>>>
>>> my iso image is ok with qemu on bios and uefi, and with qemu as hard disk
>>> on uefi but not on bios.
>>>
>>> for the last case, I've use :
>>>
>>> isohybrid core.iso
>>>
>>> but I've this error :
>>>
>>> isohybrid: core.iso: unexpected boot catalogue parameters
>>>
>>> what's my problem :-)
>>>
>>> regards.
>>
>> isohybrid is for "El Torito no-emulation" boot images (such as those
>> using isolinux.bin) and you are using "El Torito hard disk emulation".
>>
>> Unfortunately, syslinux.efi v.6.03 is not capable of booting optical
>> media in UEFI mode. Please read the wiki (and the "FAQ" link posted in
>> the isohybrid wiki page).
>>
>> Regards,
>> Ady.
>>
>>> _______________________________________________
>>> Syslinux mailing list
>>> Submissions to Syslinux at zytor.com <javascript:;>
>>> Unsubscribe or set options at:
>>> http://www.zytor.com/mailman/listinfo/syslinux
>>
>>
>>
>> _______________________________________________
>> Syslinux mailing list
>> Submissions to Syslinux at zytor.com <javascript:;>
>> Unsubscribe or set options at:
>> http://www.zytor.com/mailman/listinfo/syslinux
>>
> _______________________________________________
> Syslinux mailing list
> Submissions to Syslinux at zytor.com
> Unsubscribe or set options at:
> http://www.zytor.com/mailman/listinfo/syslinux
>