🚀 go-pugleaf

In <1992Dec12.021932.16017@nuscc.nus.sg> isc30092@nusunix1.nus.sg (CHOO GING YANG) writes:
| 	When the system is powered down and restarted, it is possible to
| escape to single user mode. I accidentently set the passwd protection
| and had fail to remove it.  
| 	Any kind soul out there know how to erase the passwd, that is
| there is no protection?

If you are talking about the PROM passwd, and the system boots
up, then you can run the command 'nvram passwd_key ""' to clear
it, if you have an Indigo.  If you can't get to any state
where you can do this, you have to pull the NVRAM chip.

More details make it easier to help...
--
Let no one tell me that silence gives consent,  |   Dave Olson
because whoever is silent dissents.             |   Silicon Graphics, Inc.
    Maria Isabel Barreno                        |   olson@sgi.com

In article <tms511s@zuni.esd.sgi.com>, olson@anchor.esd.sgi.com (Dave Olson) writes:
> In <1992Dec12.021932.16017@nuscc.nus.sg> isc30092@nusunix1.nus.sg (CHOO GING YANG) writes:
>  	When the system is powered down and restarted, it is possible to
>  escape to single user mode. I accidentently set the passwd protection
>  and had fail to remove it.  
>  	Any kind soul out there know how to erase the passwd, that is
>  there is no protection?
> 
> If you are talking about the PROM passwd, and the system boots
> up, then you can run the command 'nvram passwd_key ""' to clear
> it, if you have an Indigo.
       ^^^^^^^^^^^^^^^^^^^^^

  Does this work on 4D/20, /25, and /35's?  If not, what is the
equivalent sequence for them?

-- 
 Keith Mancus    <mancus@cheers.jsc.nasa.gov>                           
                 N5WVR                                                  

In <1992Dec17.154744.12298@aio.jsc.nasa.gov> mancus@carla.JSC.NASA.GOV (Keith Mancus/MDSSC) writes:

| In article <tms511s@zuni.esd.sgi.com>, olson@anchor.esd.sgi.com (Dave Olson) writes:
| > In <1992Dec12.021932.16017@nuscc.nus.sg> isc30092@nusunix1.nus.sg (CHOO GING YANG) writes:
| >  	When the system is powered down and restarted, it is possible to
| >  escape to single user mode. I accidentently set the passwd protection
| >  and had fail to remove it.  
| >  	Any kind soul out there know how to erase the passwd, that is
| >  there is no protection?
| > 
| > If you are talking about the PROM passwd, and the system boots
| > up, then you can run the command 'nvram passwd_key ""' to clear
| > it, if you have an Indigo.
|        ^^^^^^^^^^^^^^^^^^^^^
| 
|   Does this work on 4D/20, /25, and /35's?  If not, what is the
| equivalent sequence for them?

The 20 and 25 do not support the PROM password.  At least some revs
of the 30 and 35 do, I don't remember if it was in the first PROM
rev, or just the newer prom that supports the Elan graphics.

See 'man prom' on 405 or later for more info.
--
Let no one tell me that silence gives consent,  |   Dave Olson
because whoever is silent dissents.             |   Silicon Graphics, Inc.
    Maria Isabel Barreno                        |   olson@sgi.com

In article <1992Dec17.154744.12298@aio.jsc.nasa.gov>,
mancus@carla.JSC.NASA.GOV (Keith Mancus/MDSSC) writes: 
|>> If you are talking about the PROM passwd, and the system boots
|>> up, then you can run the command 'nvram passwd_key ""' to clear
|>> it, if you have an Indigo.
|>       ^^^^^^^^^^^^^^^^^^^^^
|>
|>  Does this work on 4D/20, /25, and /35's?  If not, what is the
|>equivalent sequence for them?
|>

The 4D/20's and 4D/25's that we have don't have a prom password. The sequence
we needed to use to 'disarm' the prom password on the 4D/35's involved 
taking the case apart and disconnecting the battery cable from the system
board...which also seriously confuses all the other prom settings.

--
 Chris King                    | Internet: cking@zeus.muse.rockwell.com
 Rockwell International        | FidoNet : 1:103/315; CI$: 74017,1665
 2800 Westminster Blvd.        | Fax     : 310-797-1469
 Seal Beach, CA USA 90740-2089 | Voice   : 310-797-4969

                                                 
                                                                    
                   

In <1992Dec18.191906.9807@nb.rockwell.com> cking@zeus.muse.rockwell.com (Christopher King) writes:

| In article <1992Dec17.154744.12298@aio.jsc.nasa.gov>,
| mancus@carla.JSC.NASA.GOV (Keith Mancus/MDSSC) writes: 
| |>> If you are talking about the PROM passwd, and the system boots
| |>> up, then you can run the command 'nvram passwd_key ""' to clear
| |>> it, if you have an Indigo.
| |>       ^^^^^^^^^^^^^^^^^^^^^
| |>
| |>  Does this work on 4D/20, /25, and /35's?  If not, what is the
| |>equivalent sequence for them?
| |>
| 
| The 4D/20's and 4D/25's that we have don't have a prom password. The sequence
| we needed to use to 'disarm' the prom password on the 4D/35's involved 
| taking the case apart and disconnecting the battery cable from the system
| board...which also seriously confuses all the other prom settings.

Wrong fix.  On the 30 and 35, it is trivial.  Open the cpu side of the
chassis (with power off).  Pull the narrow ribbon cable (not the 25
pair SCSI ribbon cable) that goes to the front panel where the nvram
resides (actually, it is a serial EEPROM, not nvram, but lets not quibble;
the battery has nothing to do with the nvram, by the way, it
is only for the RTC (Real Time Clock)).

Power the system on; stop in the prom monitor.
WITH THE POWER ON, plug the narrow ribbon cable
back in.  Type 'resetenv' to the PROM monitor.
Reset netaddr, and any other variables you care
about.

Turn the power off, close up the machine, and
boot normally.


With the Indigo's, this is all quite a bit harder to do,
because the EEPROM is much harder to get to (it is on the
backplane, behind the cpu board).

--
Let no one tell me that silence gives consent,  |   Dave Olson
because whoever is silent dissents.             |   Silicon Graphics, Inc.
    Maria Isabel Barreno                        |   olson@sgi.com