AIX question

Thu Jun 17 13:32:22 PDT 2004

Jennifer Davis wrote:

> [...]anyone know how
> to boot AIX into single user mode over a serial console?  (No IBM keyboard
> available, and no key on the front to change to single user mode..)

Not sure what release you're at, but my boxes all take #@reb@# as a reboot
signal.  The system will respond with a '>' prompt.  If you want to reboot,
enter a '1' and press <ENTER>; any other response cancels the reboot signal.

The console has to be configured to accept a reboot string though.  You can do
this via:

	# pdisable
	# chdev -P -l tty0 -a reboot_enable=reboot
	# penable /dev/console

This is for AIX 5.x, YMMV.  We use conserver over the serial ports and have the
default break (^Ec-l1) mapped to this reboot string.

If you can get shell access, 'init s' will work, but you asked specifically
about serial consoles....

Rich
--
Rich Holland        (913) 645-1950        SAP Technical Consultant
print unpack("u","92G5S\=\"!A;F]T:&5R(\'!E<FP\@:&%C:V5R\"\@\`\`");