I have found an fixed a bug at update from systems that use serial 
console yesterday. This setting was not correctly converted to the new 
bootloader so it try to initialize VGA console instead. Update should 
work now...

Arne


On , R. W. Rodolico wrote:
> This was totally my fault, and anyone else who does it should have to 
> go
> through what I did. However, I messed up the upgrade from 2.15 core 86
> to 2.17.1. Here is how I did it.
> 
> I had core 85 installed, and did the upgrade to core 86. However, I did
> not reboot (I did it from the command line and there was no 
> notification
> there that a reboot was required). I then immediately made the change 
> to
> 2.17.1.
> 
> On reboot, the machine did not come up. Unfortunately, I had it set up
> for scon, and my serial cable is at a client site, so I was not able to
> see an error message. If you want, I can set up the same scenario and
> see if it happens again after I get my serial cable back from them
> (tomorrow).
> 
> Again, this is a very rare circumstance, and I have no debugging
> information at this time.
> 
> Rod