Can't login as root

[juno2]

I can't login the HP UX 10.2 server after changed to trusted system , how can I login it and change the root password ? thx.

[Tim Adamson_1]

Boot to single user. It's the only way you can go. That will mean a forced system crash!.


Tim.

[Stanimir · Accepted solution]

Run #init -s

to enter in single-user mode.

[juno2]

I am not sure how to access single user mode , is it the the mode of " ISL> " ? Thx.

[T G Manikandan]

Try logging into the console.

Reset the password.

On untrusted system only the first eight characters are used as password.
On trusted system all the characters are used.

Try and revert

[Tim Adamson_1]

When the system is rebooting, interrupt when it says to do so. Type "boot pri" and interact when asked to do so.

Then type "hpux -is"


Tim

[T G Manikandan]

ie.

trusted system first 8 characters are taken as password as default password length 8.

If you had a password > 8 just try out logging into root using the first 8 characters.

[Michael Tully]

A couple of thoughts for next time that you do this. (changing a system to trusted)

1. Install 'sudo' You can get it here:
http://hpux.connect.org.uk/hppd/hpux/Sysadmin/sudo-1.6.6/

2. Make sure that you have a session logged in as root, in case this happens. Changing a system to trusted expires all passwords, even root.

[T G Manikandan]

if you are unable to still login,

you can ,

1.boot into single user mode
by
interrupting the boot sequence

interact with IPL
IPL>hpux -is

2./usr/lbin/tsconvert -r
untrust the system

3.Remove the encrypted password entry of root from /etc/passwd

4.Again make the system trusted by
/usr/lbin/tsconvert

reboot the system

Thanks

[juno2]

After go to single user mode , is it just use the command "passwd" to change the password ? thx.

[Robert-Jan Goossens]

Hi,

If you are in single user mode,

# /sbin/mount -a
# cd # cd /tcb/files/auth/r/

and then delete the actual encrypted password from the root file

Hope it helps,

Robert-Jan.

[Michael Tully]

Once in single user mode remove the entry in the file Robert has suggested. The field your looking for is 'u_pwd'.

Make a copy of the file first just in case.