[rescue] Ultra 5/10 with OpenPROM Password

Dave McGuire mcguire at neurotica.com
Fri Apr 23 20:22:48 CDT 2004

On Apr 23, 2004, at 7:16 PM, Patrick Finnegan wrote:
>> I have an opportunity to get rather cheaply either an Ultra 5 or
>> Ultra 10 with a set, unknown PROM password.
>> Anybody here know an easy way to break one of these?  The only
>> options I am aware of involve ordering a new one from Sun, or
>> hot-swapping a module from a system with a good PROM.  The second
>> option would be difficult, because I don't have any other U5/10's.
> Hint 1: DONT hotswap it.  Swapping with power off is OK, but I've nuked
> ever single one I've tried doing the pull/login/put back in trick that
> works for sparc 5's.

   I've done about thirty of them (ss1/1+/2/5/10/20), and haven't fried 
a single one.  The trick is to make & break the connection cleanly 
(i.e., no jiggling it around) and insert it as close to evenly as you 


Dave McGuire          "PC users only know two 'solutions'...
Cape Coral, FL          reboot and upgrade."    -Jonathan Patschke

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