[syslinux] How to use --once? Does it work?

[H. Peter Anvin]

On 06/08/2014 02:58 PM, Ady wrote:
>>
>> To be clear, I am not saying there is no bug - there might be.
>>  
>  
> I performed the following test with several versions of Syslinux:
> 
> 1_ Execute:
>  'extlinux --once=non_default_label --install /mnt/sda1' ;
> 2_ In first reboot, the "non_default_label" should be executed;
> 3_ In second reboot, the default label should be executed.
> 
> Results:
> _ 4.05 to 4.07: OK.
> _ 5.00-pre1 to 5.00-pre7: fail.
> _ 5.00-pre8: step #2 OK, step #3 buggy.
> _ 5.00-pre9 to 5.11-pre9: OK.
> _ 6.xx and 6.xx-pre*: fail.
> 

As far as I can tell, the problem seems to be that we simply do not read
the ADV before trying access it.

	-hpa