[syslinux] isohybrid: slint64-14.1.iso: unable to find mac efi image

[Ady]

> HI,
> 
> On 29/07/2014 22:23, Ady wrote:
> 
>  > Even without such "Mac" hardware at hand, it might still be helpful
>  > to test mkisofs 3.01a24 and then check the resulting ISO image.
>  > Perhaps Didier can update his current version of mkisofs and retry
>  > with his current scripts/receipts.
> 
> I will upgrade the cdrtools package from 3.01a17 to 3.01a24 in the
> coming days and see what I come up with. If I understand well, I should
> check that even with "-eltorito-platform Mac" in the mkiosfs command,
> isohybrid doesn't complain any more, right?
 
No. The "eltorito-platform Mac" option is meant for (old-ish) "Mac" 
hardware with BIOS firmware. If you want to boot current "Mac" 
hardware, which is using (some variant of) (U)EFI firmware, the 
"eltorito-platform Mac" is not adequate.

>From the "subject" of this email thread, I am guessing that you are 
trying to build an ISO image that would boot current "Mac" hardware 
with (some variant of) (U)EFI firmware. If that's the case, then you 
should be using '-eltorito-platform 0xEF" for this "current Mac" 
hardware, as Thomas suggested.
 
> 
> If that works I could suggest to Parick Volkerding to upgrade the cdrtools
> Slackware package in Slackware-current (upcoming Slackware release).
> 
> About mixing with Syslinux 6.03-pre19 (or newer) as suggested in your
> previous post... 
 
Let me clarify. I would suggest updating Slackware to use the latest 
cdrecord / cdrtools / mkisofs version that would be available just 
before the next Slackware release (ATM, 3.01a24).

I am hoping that the combination of adequate mkisofs arguments with 
an updated mkisofs version would help reduce at least some of the 
issues described in this email thread.

But, I do _NOT_ recommend updating Slackware to use Syslinux 6.xx, 
even if this means not being able to use an updated isohybrid tool. 
What I mentioned about Syslinux was for you, to optionally and 
*temporarily* use 6.03-pre19 (or newer) ONLY for a TEST. This would 
be an _optional_ test, only in case either the other changes (mkisofs 
arguments and version update) or an alternative method, would not be 
enough. According to your recent feedback and later Thomas' email, 
this test seems to be currently unneeded.
 
> 
>  > According to the subject of this email thread, we are talking about a
>  > "mac efi" anyway, so the platform ID should not be zero, nor 1, nor
>  > 2, and the '-eltorito-alt-boot -no-emul-boot -eltorito-platform Mac'
>  > is being misused.
> 
> Not sure I understand well what you mean. The ISO image should be usable
> on BIOS and EFI PCs as well as Macs
 
Which "Macs"? As commented before, if you are referring to (new-ish) 
"Macs" with (some variant of) (U)EFI firmware, then 
'eltorito-platform Mac' is an INcorrect argument.

Regards,
Ady.