Can this be done?

[jason thompson_1]

I have a 9000/800 K460 box hpux 10.20 and a 9000/800 I70 box also 10.20. The K460 has ignite installed. The I70 has a corrupt kernel and will not boot beyond CM> (command mode) and the ISL. There is not a backup of the I70 and the vmunix.prev in /stand is crap as well. Can the 460 be used to make a bootable dds that will work on the I70 and allow me to rebuild the kernel? If so does anyone have a procedure for this?

[Vicente Sanchez_3]

Hi jason,

Has you tried to boot from the recovery cd?

If you can boot from it, there is a boot option that create a standard kernel vmunix.

Once the machine has booted, you can try to rebuild the original kernel.

Hope this help.

[S.K. Chan]

The K's and I's has different architecture, though I've never tried this before I'm sure it would not work. You probably stand a better chance if you had another "closer" model like I50, G50, etc. With no backup, it's going to be hard, if you have some kind of backup you can still boot from the recovery cd and restore the kernel ..
One last chance is do you have any "possible" kernel backed up apart from the standard vmunix.prev ? Sometimes I make a copy of my vmunix to vmunix.good to make sure that's un-touched.

[jason thompson_1]

The box in question does not have a cdrom drive attached. However, I do have a DVD drive I could attach to it. The only issue I might then have is how to determine the hardware path to the DVD drive for booting.

[Ted Ellis_2 · Accepted solution]

hook up the dvd... interrupt the reboot at the 10 seconds prompt. Run the sea command to find bootable devices. You should be able to pull it out from the other devices based on hardware path.

If you have no idea, boot the machine once, search for bootable devices, then shut the machine down, hook up the dvd and repeat. The new device in the list will be your target

Ted

[Alan Riggs]

Jason,
I agree that you will not be able to boot from a K-class kernel. Have you tried interrupting the boot sequence and pointing it to vmunix.prev? Assuming that you have neer rebuilt your kernel both manually and incorrectly, you should have a copy of your last kernel in /stand/vmunix.prev.

[Dietmar Konermann]

You can at least use the make_recovery tape to boot the box to a recovery shell. It's quite the same as what you see when you boot from CD/DVD:

- boot from tape
- interrupt installation, when prompted
- select: Run a recovery shell
- select: d. Replace only the kernel on the root file system.

Then follow the instructions...


Regards...
Dietmar.

[jason thompson_1]

Thanks for the info Ted. However I have been unable to run the sea command as I get either an illegal option or unrecognized command returned.

[Ted Ellis_2]

sorry.. the sea command (or search) will only run from the ISL... if you are unable to interrupt the boot sequence at the prompted ".... press any key within 10 seconds" message, then sea will do no good. Are you able to get to ISL... interrupt the boot process before it attempts to load a kernel?

Ted

[jason thompson_1]

Yep, I can get to the ISL, however I must chose to boot from the primary or alternate path before the ISL is presented.

[Ted Ellis_2]

hmm... I upgraded our 10.20 servers about 2 years ago, but I thought it was the same process... at the prompt where it says interrupt within 10 seconds by hitting a key... you hit a key.

At that point you are at a place where you can run the search command to find bootable devices... it would return a list with hardware paths and a shortcut like p0 p1, etc.

Then you would enter the boot command with the identified hardware path to your dvd:

boot (or you could enter the shortcut, px)

You can't get that option when you interrupt the boot path?

[Ted Ellis_2]

and I had some poor wording.. you are correct in that to get to isl you must boot from some image... you can also list the available commands available after interrupting the boot process to get an idea of what is available.

list

[jason thompson_1]

After digging around through some HP documentation on the HP site, I found the feature you described in all it's glory. Almost as a footnote in the same documentation it says some "older" 800 servers do not have the search feature. Being that I have tried it, as you and the documentation have instructed, without satisfatory results, I have concluded that I must somehow determine the path in another manner. I appreciate all the suggestions and help from everyone.