[syslinux] Isohybrid wiki page and UEFI

[Bruno Cornec]

Hello,

Ady via Syslinux said on Sat, Oct 24, 2015 at 12:56:26AM +0300:
>> EFI expects 0 "no emulation", although 4 "hard disk" would have
>> been an obvious choice, too.
>> But probably they wanted to avoid the need for partition table
>> interpretation inside the EFI System Partition.
>>
>
>And here is the issue :-O. Or I should say, the lack of simplicity and
>clarity from 1600+ pages, containing even simple-to-spot typos -- which
>are kept from one version to the next one anyway, showing the lack of
>the most basic proof-reading -- thus generating confusion.

If you have any improvement for the Spec, please feel free to enumerate
the problems you're encountering here, as I have a way to report that to
the people in charge of making updates, and we could hopefully improve
the status with the help of this community.

>So, someone could assert the
>following reasoning steps:
>
>1_ We can workaround the Sector Count limitation of 32MiB for
>no-emulation methods.
>2_ The ESP is considered a no-emulation method.
>3_ From the above assertions, we could conclude that the limitation of
>32MiB is not really relevant for the ESP.

In order to remove that potential problem, I'm now generating 30 MB
boot images. May not solve my final problem, but can help make
progresses. Still the same issue. Even with 6.04 link given to me.

>This would mean that, in spite of the UEFI specs stating that the
>Sector Count "field" determines the size of the ESP on optical media,
>this initial limitation could be overrun by means of some workaround.
>
>To be clear, with "workaround" I don't mean the "size of 0 or 1"; I
>mean similar workarounds as for no-emulation methods under BIOS.

Best regards,
Bruno.
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