Etherboot in the BIOS?
rminnich at lanl.gov
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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