[Soekris] Changing net4801 BIOS settings from Linux (boot order)

[Trevor Talbot]

On Thursday, Aug 3, 2006, at 23:50 US/Pacific, Andrej Ota wrote:

>>> Is there a way of changing boot order of devices from within Linux 
>>> (kernel 2.6.18)?
>> Not really a way supported by Soekris; however, you should be able to 
>> use the 'nvram' kernel driver, read the NVRAM data, and write out the 
>> changes (or maybe just the whole thing; I'm not sure which is the >> best
>
> ...
>
>> It would appear that the drive order is specified starting at byte 
>> 0x0013, based on what I see there; you'd have to check your own unit 
>> and see if the offset is the same or not. You should be able to find 
>> it fairly easily if you know the boot order you set in the boot 
>> monitor.
>
> I've seen this on my net4801 as well, but these bytes remain constant, 
> regardless of the comBIOS setting. I can change them, but they don't 
> affect the boot sequence (at least not in version 1.28).

Some old notes I have suggest it's stored at 0x21 to 0x24.