[syslinux] "EDD Load error" on btrfs, how to debug?

[H. Peter Anvin]

On 05/19/2014 02:07 PM, Geert Stappers wrote:
> Op 2014-05-19 om 11:20 schreef Anatol Pomozov:
>> Hi
>>
>> I have a computer with BIOS and Linux Arch installed.
>>
>> Starting from a recent syslinux update (6.02->6.03pre9) I am not able
>> to use syslinux anymore. I try to boot my computer and the only thing
>> I see is "EDD Load error - Boot error" message. When I install 6.02
>> back the system is completely fine.
>>
>> Other people use syslinux 6.03 fine. They use ext4 and I use btrfs as
>> my root partition fs so it might be a problem for syslinux.
>>
>> I would like to debug and see this problem fixed. How to enable more
>> verbose output at boot stage? I would like to get more information
>> about why the EDD error happens. Any other debugging advises?
> 
> Kernel bootparameter 'earlyprintk=....', e.g. earlyprintk=vga
> 

He doesn't get far enough for that.

	-hpa