[syslinux] syslinux mkisofs hard-disk-boot isohybrid

[Pascal]

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).

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.
>
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