How to boot system into sigle user mode(HP 9000)

[mehul_3]

Due to one or another reason, all adminsitrative account got disabled and to enable it, I want to boot HP-UX11.11 9000 seris(risc based) into single user mode.
Could some please send a steps as the earliest.

Wating for immediate response.

Regards,
Mehul

[Safarali]

Mehul you can use shutdown -s

or shutdown -S if you are using xterm or others

but if you shutdown all the user is not able to access the system

Regards
Safar

[Torsten. · Accepted solution]

Stop the boot process at BCH. Boot from the disk, interact with ISL, run "hpux -is"

Main Menu: Enter command or menu > bo pri

Primary Boot Path: 0/0/1/0/0.8.0.5


Do you wish to stop at the ISL prompt prior to booting? (y/n) >> y

Initializing boot Device.


Boot IO Dependent Code (IODC) Revision 3


Boot Path Initialized.


HARD Booted.

ISL Revision A.00.43 Apr 12, 2000

ISL> hpux -is

...

[Fat Scrape]

Hi,

Interrupt the boot process when prompted.

boot pri isl (at the prompt.)
ISL> hpux -iS /stand/vmunix

Regards,

[Mark J McDonald]

or

edit the /etc/inittab file so the first line starts:

init:s:

[mehul_3]

How could I know it whether using xterm or not? Could I directly swith off server by pressing button directly.

Is there any other way to get account enable?

[Torsten.]

Try to connect using the console!

If you switch off the server, there will no shutdown happen (just OFF).

[mehul_3]

If I switch off the server, there will no shutdown happen. so what to do in such case.
Pl, help me

Regards,
Mehul

[Dennis Handly]

>Safarali: You can use shutdown -s

I see no shutdown -S or -s. If you use shutdown -r, you'll reboot.

>Could I directly switch off server by pressing button directly.

On some workstations, turning off the power is the same as reboot -h, it does a graceful shutdown. In any case, you would have to do what Torsten and Fat Scrape say, when you reboot.

[mehul_3]

One more trouble all of you that if system boot into sigle user mode shall I get # prompt so that I can give /usr/lbin/modprpw -k root to reactivat root and to make null of root passowrd by giving /usr/sam/lbin/usermod.sam -F -p "" root?

[Dennis Handly]

/usr/sam and /usr/lbin isn't mounted so you can't do that in single user mode. You could use passwd.

Otherwise you would need to mount more filesystems.

Normally you should always be able to login to root on the console. I assume you tried that already?

[mehul_3]

So now what should I do.
Pl, help......in more trouble

[Mark J McDonald]

Sounds like you have 'lost' the root password.

If its a server class then you will need a console attached, if its a workstation with a monitor attached you can use this.

Log on as any other users to shut down databases etc, then power off the machine with the button.

Interupt the boot as described above boot to single user mode. use the 'passwd root' command to change the root password.

[mehul_3]

Will system allow me to change root password
by giving #passwd root becasue I presume I have to reactivate it before giving it?

[Torsten.]

As mentioned multiple times earlier, try to connect using the systems console!

[Dennis Handly]

>Will system allow me to change root password
by giving #passwd root

Yes.

>because I presume I have to reactivate it before giving it?

No.

[mehul_3]

Thanks for all your valuable inputs.
Problem has been resolved by rebooting it on single mode and after reactivating and setting null password, system was allowed to reset a new password.