What do you do if the system will not respond to commands? I'm using SUN Fire v210. We had a power hit, so i think it caused a problem. The monitor does not come up anymore. So i plugged in on a laptop via serial port, rebooted. The system seems to start to boot, but comes up to message "SC Request to Send Break to Host" and stops.
Anything I enter results in a prompt {0}ok and afterwords, anything i type at that prompt makes no effect. Can't even do a graceful reboot.

Hello ireeneek,

this link will leed you to the SC message.
http://docs.sun.com/source/816-7733-11/ga-notes-11.html

Type "#." to enter the ALOM manager

Mugin

The problem is that no matter waht i type at the {0}ok prompt, I return to the prompt. The system does not do anything. it ignores all my inputs. I can't get past the point of {0}ok

OPB is firmware. If OBP is ignoring valid OBP commands, you must have a hardware problem. I would suspect communication bewteen the laptop and the system. Check the parameters in the laptop. 9600 baud? 8 data bits? 1 stop bit?

Doesn't the appearance of the ok prompt on the laptop imply communication?

If this happens to be the case then have you tried :
1) booting from cdrom
2) powering off and on (switching the key)

It does not guarantee that the laptop is generating characters that the system can understand.

checked the term settings on the laptop.
all ckecks. 9600, 8, 1 bit. just not sure what Flow control.. hardware, none or x-on/x-off

still not getting past {0} ok.
tried rebooting again, same result.