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Full Discussion: Any hope for this bootlooping Sun V210?
Operating Systems Solaris Any hope for this bootlooping Sun V210? Post 303026542 by vext01 on Thursday 29th of November 2018 02:24:58 PM
Old 11-29-2018
Hi gull04,


Thanks for your ongoing patience with this thread!


I'm not at the machine, but off the top of my head `poweron:


  • does indeed turn the system on and spins up the fans.
  • generates the "system power on event" message.
  • a few fan failure messages.



About the fans, one fan failure message was a CPU fan, I removed that CPU entirely as I believe the system should work with only 1 CPU anyway. There was also one chassis fan failure. Again I don't think that would stop the system booting. (I have spares which I will fit if I can get the system to boot).


IIRC, once the system is in the poweron state, `console -f` should give an 'ok>' prompt after hitting 'console -f' (and enter twice).



I can get you the exact ALOM messages later when I'm at the system.

------ Post updated at 06:48 PM ------

I replaced the fans on the CPU.


The console output looks like this:


Code:
sc> poweron
sc> 
SC Alert: SC System booted.

sc> console -f
Enter #. to return to ALOM.

SC Alert: VOLTAGE_SENSOR @ MB.BAT.V_BAT has exceeded low warning threshold.


I can hit enter as many times as I like, but no 'ok' prompt.


If the CPU were bad, the ALOM would know, right?

------ Post updated at 07:24 PM ------

I also tried resetting nvram, and provideing a bootscript like:


Code:
setenv output-mode ttya


no cigar.
 

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LEARN ABOUT ULTRIX

mdc

mdc(4)							     Kernel Interfaces Manual							    mdc(4)

Name
       mdc - DS5100 serial line driver

Syntax
       device	 mdc0	  at ibus?     vector mdcintr
       device	 mdc1	  at ibus?     vector mdcintr
       device	 mdc2	  at ibus?     vector mdcintr

Description
       A  DS5100 base system (mdc0) provides four asynchronous ports.  An optional asynchronous card (mdc1 and mdc2 ) can be added to supply eight
       additional ports.

       The mdc ports are used as follows:

       Port    Usage			  Connector

       0       Console port		  6-pin MMJ on CPU board
       1       Local terminal		  6-pin MMJ on CPU board
       2       Full modem control port	  25-pin D-Sub on CPU board
       3       Local terminal		  6-pin MMJ on CPU board

       An optional asynchronous board provides an additional eight lines:

       4       Local terminal		  6-pin MMJ
       5       Local terminal		  6-pin MMJ
       6       Full modem control port	  25-pin D-Sub
       7       Local terminal		  6-pin MMJ
       8       Local terminal		  6-pin MMJ
       9       Local terminal		  6-pin MMJ
       10      Local terminal		  6-pin MMJ
       11      Local terminal		  6-pin MMJ

       The console baud rate is set to 9600 baud by default.  You can change this by setting the baud environment variable  from  console  prompt.
       Each  communication  port  from	the  serial  line controller behaves as described in the reference page and can be set to run at any of 16
       speeds.	For the encoding, see

       You can establish the state of port 2 (port 6) by specifying either modem or nomodem as part of the file entry.

Restrictions
       The speed default is to 9600 baud on the console port.  The console device must be set for 8-bit character length with one stop bit and	no
       parity. The driver enforces these restrictions; that is, changing speeds with the command may not always work on console ports.

Files
       Console terminal

       Full modem control or local terminal

See Also
       console(4), devio(4), tty(4), ttys(5), MAKEDEV(8)

								       RISC								    mdc(4)
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