Here is a silly question:
I have a Sun 220R and I need to get to the OK prompt. I can't hook up a monitor and keyboard to it. Its on a KVM right now and I also have a console connected to it. I can use PuTTY to get to the console and then connect to the 220R from there.
How can I get to the OK prompt? I tried sending a Cntrl-C, no luck. I tried sending a cntrl-break, no luck.
You could try <CR> ~ ctrl-b (carriage return, tilde, control b)
or possibly ~ break (spell the word "break")
Those are the other two sneaky ways I know of that sometimes work, depending on your config files/settings.
If you can log into the server as root, check out your /etc/default/kbd file. It should tell you if the alternate break sequence is enabled or not. Google that file for way more details than you could possibly want 
putty has an option in the menu to send a "break" signal. just do a "right click" on the windowbar and choose "special options -> break".
hth,
DN2
control ] and then send brk always works for me in putty to get to the ok prompt.