topic Re: Boot disk in Operating System - HP-UX

Boot disk

j773303 — Thu, 26 Aug 2004 03:03:06 GMT

I have 2 disk c0t1d0 and c1t1d0 in the VG00,
c1t1d0 is a mirror boot disk. Does anyone knows which disk is the boot disk currently ?
Which way can show the system is boot by which disk ? Thanks.

Re: Boot disk

John Palmer — Thu, 26 Aug 2004 03:13:36 GMT

Hi,

Run setboot this will display the primary and alternate boot paths.

man setboot

Regards,
John

Re: Boot disk

Simon Hargrave — Thu, 26 Aug 2004 03:15:51 GMT

Yes, you can do it with adb: -

echo 'boot_string/s' | adb /stand/vmunix /dev/mem

This will show you the boot string, which will include the hardware path of the disk. You can then match this to device file with your choice of ioscan or lvlnboot -v

Re: Boot disk

Franky_1 — Thu, 26 Aug 2004 03:16:57 GMT

Hi,

you can type "setboot" and look for primary and alternate bootpath
Then type a ioscan -fnC disk and you'll see under the column H/W Path which disk is the current boot disk and which disk is the mirrored one

Regards

Franky

Re: Boot disk

Sยภเl Kย๓คг — Thu, 26 Aug 2004 03:42:13 GMT

Using setboot command is the best option for you
regards
SK

Re: Boot disk

Sunil Sharma_1 — Thu, 26 Aug 2004 03:46:11 GMT

Hi,
setoot will give you information about primary and alternat boot path and if system booted automatically, without manual intervention, primery path will be the disk where system booted.

Sunil

Re: Boot disk

Simon Hargrave — Thu, 26 Aug 2004 03:48:44 GMT

path ACTUALLY booted from isn't shown by setboot. This will show primary and alternate, however if an admin did "bo alt" to boot, setboot will not show this.

The only way to see the ACTUAL disk used to boot is with the adb command above (unless the server has just booted it may be at the top of dmesg output).