[rescue] Bypassing Password Protected NVRAM on SS4

[Dave McGuire]

On December 7, Steve Sandau wrote:
> With a SPARC5 and a 20 (both with unknow-to-me passwords in the NVRAM),
> I was able to fire up the machine and get to the point where it asked
> for the NVRTAM password, remove the NVRAM chip, hit enter, replace the
> NVRAM and reset the chip to factory defaults. Worked the two times I
> tried it with no ill effects.
> 
> I don't know if a SS4 is the same arrangement or not...

  It should be the same on an SS4...I've used a very similar procedure
for pretty much everything including SS1s and 4/600s.  The important
thing is to remove and replace the chip evenly...try to ensure that
all pins make contact with the socket simultaneously.  This will
minimize the [non-zero] chances of popping the chip.

   -Dave

-- 
Dave McGuire
St. Petersburg, FL