Boot with older kernel

[Daniel Caçador]

Hi!

I need to boot with older kernel in HP-UX 11i.
How I do this?

Thank's!

[Peter Godron · Accepted solution]

Daniel,
you want to use the previos kernel?

Check that /stand/vmunix.prev exists !

reboot system
interupt boot
bo pri ipl
interact with isl

ISL> hpux /stand/vmunix.prev

[Daniel Caçador]

Hi!

I try this command, but, don't work.

This is the only way to make boot using the older kernel?

Thank's.

[RAC_1]

What is the error/message that you get?
From ISL can you ll /stand? Can you see old kernel file there?

[Daniel Caçador]

This is a shoot of screem

I'm thinking one person make a rename of kernel.

I could mount de LVOL's too...

[Daniel Caçador]

This is a shoot of screem

I'm thinking one person make a rename of kernel.

I could mount de LVOL's too...

[Daniel Caçador]

I could NOT mount the LVOL's

[Peter Godron]

Daniel,
you may need to use the recovery disk if you have an unbootable kernel and can't find the previous one.

[RAC_1]

The screen shot that you attached has errors about inittab entries and nothing more. From ISL boot into single user mode (From ISL, do hpux -is /stand/vmunix) and comment out entries that are giving problem. (Except console entry) Once that is done, try booting through old kernel.

Post error if any and in full.

[Daniel Caçador]

Please, look this screen shot.

What you can see?

Thank's

[RAC_1]

Looks like, you have serious problems with disk or lvols.

Can you at least boot into single user mode?
Is disk ok? Do you have mirror copies of disk. If yes, try booting through alternate disk.

[Daniel Caçador]

Well,

My disk aren't OK

But...My lvols.....I don't know...

I Don, t have mirror, But i can boot in single user mode...

Alternate disk? how?

Thanks!

[Daniel Caçador]

Some idea?

[Baiju Kumar.B_1]

dear sir ,
from screen shot i understood that ,either your stand file systen is corrupted or the boot disk is having problem.you can try to boot from old kernel ,for this purpose you have to intrrupt auto boot and go to pdc
issue the folloing commands
bo pri
it will ask do u want to interrupt with isl

give y

from ipl prompt
give the followin command
hpux ll /stand

you will get all the kernal
lists in /stand file system try with yuor wanted kernel

with following format

hpux -is /stand/
if you will get the prompt it is ok

u can fsck the /stand file system and reboot the system

if it is not ok with this step,it is disk problem replace the root disk ,if mirror disk is not present .if it is there boot through alternate disk.if you are replace the root disk please restore the ignite unix back up from tape,for getting the full system configuration


please check the man pages of the following


#man fsck
#man make_tape_recovery

regards
Baiju Kumar.B

[Sivakumar TS]

Hi Daniel,

Looks like the /stand filesystem in corrupt.

Please boot thru the HPUX Support CD

RUN the recovery shell

after getting the shell prompt

try to do fsck and fix the /stand

NOW reboot thru DISK and try to boot HPUX.

Hope this helps.

Siva.

[Daniel Caçador]

Yes!

My /stand is all modify!

But, after boot running older kernel, I don't can mount /dev/vg00/lvol1 on /stand to fix de kernel!

How I can mount?

Thank's!!!!

[Daniel Caçador]

Thank's