To permanently change the system prompt, you must get into SYSGEN and change either or both the "logon prompt" and the "ci prompt" in the miscellaneous subsection. You should be logged on as system manager in the SYS account.

:SYSGEN

sysgen> MI

misc> HE SYSTEM

system (sy) [userversion = x.yy.zz]

[logonprompt = max-255-characters]

[ciprompt = max-255-characters]

[enforcelogonudcs = ON|OFF]

To change any of the values you just type:

SY {command name} = {new value}

Remember to HO(ld) your changes before you exit back to the sysgen level and then you must KE(ep) the changes or they will be ignored when you exit SYSGEN. Finally, none of the above takes effect until you do a SHUTDOWN and "START NORECOVERY" of the computer. Note that if you want the prompts to use lower case characters, you must enclose it in double quotes.

Of course, you can also change the CI prompt on a session by session basis using the HPPROMPT CI variable (usually in a logon UDC).