Etherboot in the BIOS?

ron minnich rminnich at
Fri Aug 15 10:28:01 CEST 2003

On Fri, 15 Aug 2003, Andrew Sterling Hanenkamp wrote:
> According to the FAQ, it's possible to boot Linux using Etherboot with 
> LinuxBIOS.  This appears to be a pretty simple and straightforward 
> process, but I was wandering if it were possible to render the system 
> unbootable?  That is, is it posible that overwriting the BIOS will cause 
> boot to fail (because of misconfiguration, etc.)?  If this happens, is 
> there anyway to recover?  What are the pitfalls and how can I avoid them?

There is a fallback bios mechanism for linuxbios, and in V2 it is easy to 
build fallback/normal images. It's quite an interesting design, Eric 
developed it, and it's worth a read of the code to see how it works.

We use this fallback system on the 1024 node pink system, and it has 
served us well through many flash cycles. 


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