[syslinux] [PATCH 1/2] Match comment with code

[Ady]

> On 12/16/2013 12:28 AM, Ruben Kerkhof wrote:
> > 
> > On 15 dec. 2013, at 20:21, Ady <ady-sf at hotmail.com> wrote:
> > 
> > Hi Ady,
> > 
> >> Please forgive my ignorance. Could someone point to some "standard" 
> >> or some documentation where the supposedly correct / adequate value 
> >> (EE or ED or whichever) is specifically listed and/or explained?
> >>
> >> For example, where is this "ED" partition type ID listed where it 
> >> specifically makes reference (or in relation) to *EFI*?
> >>
> >> The reason I ask is because I know about "EE" and "EF" partition 
> >> typed IDs in relation to EFI, but not about "ED" (in relation to 
> >> EFI). Perhaps I am just misunderstanding this email thread (?).
> > 
> > That's what I thought, and I haven't found any reference to ED, except for
> > doc/gpt.txt which talks about "the T13-approved protocol for GPT partitions with BIOS
> > firmware."
> > 
> 
> Yes, it is in the T13 EDD documentation.
> 
> 	-hpa
 
Here is what I found.


24 July 2009 (older)
e09127r0
"EDD-4 Hybrid MBR support"
[/quote]
Set to the OS Type field of the Partition Record of 
the bootable partition. Set to 0xED if the bootable 
partition is from GPT.
[/quote]

4 January 2010 (newer)
e09127r3
"EDD-4 Hybrid MBR boot code annex"
[quote]
Set to the OS Type of the bootable partition (i.e., 
that would have been assigned had the partition 
been installed in an MBR disk layout).
[/quote]

So, in the older revision, "ED" is explicitly mentioned. In a newer 
revision there is no explicit mention of an ID code.

I still see popular sites with lists of partition IDs with "EE" and 
"EF" in relation to EFI, and AFAIK there is no (other) "standard" for 
GPT in BIOS.

I wonder whether other documents / standards explicitly mention *any* 
partition ID, and whether these IDs could potentially result in 
future inconsistencies / problems / bugs / hours of tracking down 
strange (mis)behaviors.

Regards,
Ady.