Changing forgotton root password on HP-UX - HP UX
This is a discussion on Changing forgotton root password on HP-UX - HP UX ; I had this problem and was able to solve it after some digging. You
need to be on the console to change the root password.
1) Reboot the machine, hold the ESC key
2) A promt will appear. Type "boot ...
-
Changing forgotton root password on HP-UX
I had this problem and was able to solve it after some digging. You
need to be on the console to change the root password.
1) Reboot the machine, hold the ESC key
2) A promt will appear. Type "boot pri isl" or just "boot pri"
3) On ISL prompt type
ISL> hpux -is
4) System will give you a root promt. If the root password is already
set on the system and you forgot it then using passwd command will not
work as it will ask for the old password which you may not have.
5) export TERM=vt100 (if it is not set already)
6) cat /etc/fstab
7) Look at the volume groups for /var , /tmp, /usr. mount all of
these. You might also have to do fsck to these vol groups in some
case.This info is system specific.
8) Try command
# bdf ( this may not work at this time).
Example to mount your filesystems. You dont have to perform fsck
every time but some of you might have to do it , hence both the
examples are below:
# fsck /dev/vg00/lvol4 ( If that is /var in /etc/fstab. do the
same for /usr/ and /tmp).
#mount /dev/vg00/lvol4 ( if that is /var/ in /etc/fstab. do the
same for /usr and /tmp).
now try this command
#bdf ( this should work now)
9) # cd /tcb/files/auth/r/
10) # vi root
11) You will find a password string for example
u_pwd=hDe1x6DzeriPl4:\ (this is just an example and not real
password 
)
remove this string but do not remove colon and the slash ( :\ ). so it
should look
u_pwd=:\
save and exit.
12) # passwd root ( now change the password for root)
13) unmount all the mouted filesystems (/var /tmp /usr)
14) reboot
Hope this helps.
-
Re: Changing forgotton root password on HP-UX
itsme schrieb:
> I had this problem and was able to solve it after some digging. You
> need to be on the console to change the root password.
> 1) Reboot the machine, hold the ESC key
> 2) A promt will appear. Type "boot pri isl" or just "boot pri"
> 3) On ISL prompt type
> ISL> hpux -is
(snip)
that's fine.
But how to achieve that on a series 300/400
(they don't have ISL) ?
-
Re: Changing forgotton root password on HP-UX
Michael Kraemer wrote:
> itsme schrieb:
> > I had this problem and was able to solve it after some digging. You
> > need to be on the console to change the root password.
> > 1) Reboot the machine, hold the ESC key
> > 2) A promt will appear. Type "boot pri isl" or just "boot pri"
> > 3) On ISL prompt type
> > ISL> hpux -is
>
> (snip)
>
> that's fine.
> But how to achieve that on a series 300/400
> (they don't have ISL) ?
Please try:
- Let the system boot.
- When the system is fully booted, power it off, i.e. do *not* do a
shutdown(1M).
- Power-up.
- Because the system was not properly shutdown, it will start to
fsck(1M) the disk(s).
- Before, when and after fsck is running, i.e. before and after the
"/etc/bcheckrc:" (note colon) message, *repeatedly* type:
- CTRL-\, i.e. press-and-hold the "CTRL" key and press the "\" key.
If that does not work, then start over and try:
- DEL, i.e. press-and-hold the "Shift" key and press the ESC/DEL key,
If that does not work, then start over and try:
- CTRL-C, i.e. press-and-hold the "CTRL" key and press the "C" key,
- For a default system, this will hopefully abort the boot process or/
and fsck and will hopefully give you a "(in bcheckrc)# " prompt. If
so, you are in single user mode.
I hope this helps. If it does, then please report which of the 'magic'
characters (CTRL-\ or DEL or CTRL-C)) worked.
