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

[H. Peter Anvin]

On 12/16/2013 01:41 PM, Ady wrote:
> 
> 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.
> 

You're right - T13 changed the "OS Type" from 0xED to "that would have
been assigned had the partition been installed in an MBR disk layout".
That is kind of hard to accomplish without blowing the MBR code size
budget, since it effectively requires a mapping from GUIDs to OS types.
 In practice I doubt it matters, though.

	-hpa