topic Re: Kernel Question in Operating System - HP-UX

Kernel Question

Larry Scheetz — Mon, 08 Jul 2002 10:54:05 GMT

I loaded patches and system and it wouldn't boot. I then interacted and booted from /stand/vmunix.prev I renamed the bad one to /stand/vmunix.bad

Question is I am now running off of /stand/vmunix.prev and want this to be the default boot kernel. Can I just rename it from vmunix.prev to vmunix on a live system and then on next reboot it will be fine?

Thanks
Larry

Re: Kernel Question

harry d brown jr — Mon, 08 Jul 2002 10:57:21 GMT

Larry,

do a cp /stand/vmunix.prev /stand/vmunix, providing you have the space available in /stand.

live free or die
harry

Re: Kernel Question

Luc Bussieres_1 — Mon, 08 Jul 2002 10:59:18 GMT

Larry,

If this is an 11.0 system you have more things to do to move back the old kernel. Since you have the system file and the dlkm directory that is used also.

# mv dlkm dlkm.bad
# mv dlkm.vmunix.prev dlkm
# mv system system.bad
# mv system.prev system
# mv vmunix vmunix.bad
# mv vmunix.prev vmunix

Luc

Re: Kernel Question

James R. Ferguson — Mon, 08 Jul 2002 11:00:18 GMT

Hi Larry:

Yes, copy /stand/vmunix.prev as /stand/vmunix. I'd also restore /stand/system.prev as /stand/system for consistency.

Regards!

...JRF...

Re: Kernel Question

RAC_1 — Mon, 08 Jul 2002 11:00:20 GMT

cp /stand/vmunix.prev /stand/vmunix

(if you have enough space)

Re: Kernel Question

Larry Scheetz — Mon, 08 Jul 2002 11:06:54 GMT

Thank you for all the quick good replies. One last one. Is there a command line option to tell what kernel you are running on? Thanks

Re: Kernel Question

Ravi_8 — Mon, 08 Jul 2002 11:17:03 GMT

Hi,

There is no any command to tell which kernel you are running. Basically it is hp-ux kernel

Re: Kernel Question

Luc Bussieres_1 — Mon, 08 Jul 2002 11:27:44 GMT

Larry,

Here is the command line you need,
# echo 'boot_string/S' | adb /stand/vmunix /dev/mem

The output should look like:

boot_string:
boot_string: disc(56/52.5.0;0)/stand/vmunix.prev

Luc

Re: Kernel Question

AUJ — Tue, 09 Jul 2002 08:14:32 GMT

Larry,

Yes! In the command prompt, type.

# echo 'boot_string/S'|adb /stand/vmunix /dev/mem

Rgds,
AUJ