Kernel Question

[Larry Scheetz]

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

[harry d brown jr · Accepted solution]

Larry,

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

live free or die
harry

[Luc Bussieres_1]

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

[James R. Ferguson]

Hi Larry:

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

Regards!

...JRF...

[RAC_1]

cp /stand/vmunix.prev /stand/vmunix

(if you have enough space)

[Larry Scheetz]

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

[Ravi_8]

Hi,

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

[Luc Bussieres_1]

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

[AUJ]

Larry,

Yes! In the command prompt, type.

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

Rgds,
AUJ