[syslinux] Changes to get CD to boot on EFI System.

[Didier Spaier]

Hi,

On 22/03/2016 16:35, Thomas Schmitt via Syslinux wrote:
> Hi,
> 
> Michael D. Setzer II wrote:
>> Fedora 23 on the machine from DVD, and 
>> that went fine, and it setup an EFI boot from grub.
> 
> That's the current state of the art:
> EFI booting out of an ISO filesystem does not work with SYSLINUX.
> 
> All bootable ISOs i know use GRUB for EFI booting. Even the
> option --uefi of program isohybrid is to be used with a GRUB2 equipped
> FAT filesystem image that is already in the ISO as its second El Torito
> boot image.
> Matthew Garrett developed this ISOLINUX+GRUB2 layout for Fedora. Many
> other distros follow his example.
> The next popular alternative is the layout of grub-mkrescue which boots
> both, BIOS and UEFI, by GRUB2 software.
> And then there is SuSE which grafts a second ISO superblock and
> directory tree onto an ISO which contains a GRUB2 boot image for EFI.
> (Less popular only if we count SuSE as 1 user, not by its many human
>  users.)

There is also goofiboot (fork of gummiboot) and even efi-stub if
there is no need to tweak the kernel parameters before booting.

As a reminder, in the latter case an initrd can be embedded in the
kernel as well as a kernel command line, but I digress.

Didier