Can't go to single mode while rebooting.

[presage112]

hi ,
I'm seeking the help to go to single mode while rebooting to do a restore from a tape drive, because pressing ESC or SPACE at reboot time doesn't work.

also the option go to single mode from SAM doesn't let me do SEA. so I can locate the tape drive.


OS ver HP-UX 11.0

[Bharat Katkar · Accepted solution]

Hi,
If you are only interested in locating the tape drive then you do it in normal run level (2 or 3) also as below:

# ioscan -fnC tape

This will list the tape devices in your System.

Way's to go to single user mode are:

# init 1
or
# init S
or
# init s

See man init for more info.

You have to go to PDC prompt for SEA command as you mentioned in your question. For that you have to reboot the System with :
# shutdown -r -y 0
and on console wait for the message to appear
" Press any key to halt the boot process "
After pressing any key you go to PDC prompt there you can type SEA to search for potential boot devices.

Main menu> sea

Now from here if you wish to go to single user mode then:
Main menu> bo
Interact with IPL> yes
ISL> hpux -is

This will boot the system into sinlge user maintenance mode without even asking for root password.

Hope this helps.

Regards,

[Steven E. Protter]

If this is a serial console, you need to go into configuration mode and choose a normal TERM type like vt100.

Or just reset the settings to default. The default settings will allow you to use the space bar, which you need.

SEP

[KapilRaj]

I think u hv set autoboot ON. and the system is not waiting for a user response while booting. The two options for you are ..

1. Pull out the Boot disk !( Problematic)
2. Use setboot and set the primary and secondary boot path to a non-existant device and reboot the system. next time when system tries to boot it will fail and will come to IPL

Regds,

Kaps

[Camel_1]

what model of server you are using, for most of the server, go to IPC and type hpux -is

[presage112]

thanks all

Steven E Protter ,how can i reset the system to the default settings.

thanks .

[Naveej.K.A]

hi,
if you got a conventional HP console,
press d and power on the console.
It should reset the values to the default

regds
Naveej

[Heiner E. Lennackers]

It sounds to me like you have SECUREd the IPL. This disables the possibility to stop the boot process to get into the IPL. You can use Kapil Raj's solution to get into the IPL and desecure the ipl again.