help!i find a "toc" button behind my b2600 ,so i use a pencil to touch it

[常有慈悲心]

but after that ,the system dump again and again.
so what should i do?
can i reinstall it?

[Don Morris_1]

Well, triggering the TOC caused a dump to be generated and a reboot to happen. What should have happened next is that the kernel should have come up and saved the dump.

To know what to do next, it would help to know at what point the booting kernel is crashing (paste the console would be nice).

The first thing you want to do would be to interrupt the boot process, when it boots you should see something like "Booting from Primary, press any key to discontinue" [I honestly forget the exact message]. Press something to stop the boot process. Then:

bo pri

(boot from primary)

at the ISL> prompt,

hpux ls

to see if you have other kernels (skip this if you know of a saved kernel). I'd look for something like vmunix.prev (if perhaps you'd installed patches since the last time), or vmunix.GOOD or somesuch.

If you find one,

hpux vmunix.prev (or whatever name you found)

and see if that works.

Mind you -- if you're panic'ing because of something like "vfs mountroot failed: NEED DRIVERS?" then it is entirely possible that it isn't the kernel (per se), the root file system may have been corrupted. At that point -- I usually re-install the box, but that's because I don't tend to have data I care about on test machines. So if your reboots are stemming from something like that -- post the console log here and hopefully someone (more knowledgable in LVM/FS than I) can point you to a walkthrough of getting things back up.

[Steven E. Protter · Accepted solution]

No, you should not have to reinstall the os.

TOC is something you can trigger with software, the system is supposed to recover it. This applies unless you hit toc while installing the OS.

Make sure no pencil fragments, such as graphite ,wood or eraser are lodged in the thing and the button is back in its normal position. Then boot again.

TOC is not supposed to damage the system.

SEP

[常有慈悲心]

thanks all. i will try it .