topic Re: Booting from CDrom in Operating System - HP-UX

Booting from CDrom

Michael Thomas_1 — Fri, 16 Aug 2002 12:48:07 GMT

How do I identify what boot device corresponds with the cdrom on an HP L2000 running HPux11. I am trying to boot from the HPux11i OS Cdrom to upgrade it I ran search from and it shows different devices but I cannot decipher which one is the CDrom. ANy help would be appreciated.. Thanks!!

Re: Booting from CDrom

Ralph Grothe — Fri, 16 Aug 2002 12:55:36 GMT

If you already have the Unix kernel booted you could issue an

ioscan -nfCdisk

and note the HW path of the CDROM device

otherwise you can interrupt the boot sequence when there appears the message ".. to interrupt .. press any key.."

Then you can search for bootable devices at GSP by

SEarch

When you have identified the HW path the CD device is connected to
issue

BOot X/X.X.X

Re: Booting from CDrom

Alan Casey — Fri, 16 Aug 2002 12:55:50 GMT

The hardware path is often written on the back or door of the server.

Re: Booting from CDrom

Leif Halvarsson_2 — Fri, 16 Aug 2002 12:56:05 GMT

Hi
Did you not get any information about disk types (for example: SEAGATExxxx,TOSHIBAyyyy) ?

Re: Booting from CDrom

Ceesjan van Hattum — Fri, 16 Aug 2002 12:58:14 GMT

Type 'ioscan -fnCdisk' on the running system and look voor CD-ROM or DVD.
Likely it will give you the path on the second line, like /dev/dsk/c2t3d0, but it will give you at least the H/W path:
i.e. 14/0/2.3.0

Once you know the path, you can reboot from CD. Interrupt the bootsequence; enter ISL.
Type 'env' to see the settings.
Then:
ISL>rootdev=disc(14/0/2.3.0;0)INSTALL
ISL>kernel=INSTALL
ISL>go

Regards,
Ceesjan

Re: Booting from CDrom

Pete Randall — Fri, 16 Aug 2002 13:09:40 GMT

Michael,

Obviously, the easiest method is to note the hardware path before booting. If it's too late for that, you have to make some (semi-)educated guesses, using the SEArch command to look for sequential access devices (rather than random). Hopefully you can narrow it down.

Pete

Re: Booting from CDrom

Jon Mattatall — Fri, 16 Aug 2002 13:29:13 GMT

Coincidentally, I'm doing the same today...

Boot the box and interrupt the boot...

Main Menu: Enter command or menu > sea

Searching for potential boot device(s)
This may take several minutes.

To discontinue search, press any key (termination may not be immediate).

Path# Device Path (dec) Device Path (mnem) Device Type
----- ----------------- ------------------ -----------
P0 0/0/1/0.3 extscsi.3 Sequential access media
P1 0/0/1/1.2 intscsib.2 Random access media
P2 0/0/1/1.0 intscsib.0 Random access media
P3 0/0/2/0.2 intscsia.2 Random access media
P4 0/0/2/0.0 intscsia.0 Random access media
P5 0/0/2/1.2 media.2 Random access media
P6 0/2/0/0.0 Random access media
P7 0/2/0/0.0.1 Random access media
P8 0/2/0/0.0.2 Random access media
P9 0/2/0/0.0.3 Random access media
P10 0/3/0/0.1 Random access media
P11 0/3/0/0.1.1 Random access media
P12 0/3/0/0.1.2 Random access media
P13 0/3/0/0.1.3 Random access media

Main Menu: Enter command or menu > bo p5

...as p5 / media.2 is the DVD-ROM.

A caveat.....
We have 4 L2000's here, and they all behave the same. Following a HARD poweroff from the actual server, the SEA shows the DVD and all is well.

IF you then issue a RESET or an RS from the GSP, the DVD IS NOT properly detected. The media.2 designator is not present, and BO P5 results in an error. The box must be hard powered off and on again to properly detect the DVD. I don't understand it, but it's repeatable behaviour, so there you go.

Jon

Re: Booting from CDrom

Pete Randall — Fri, 16 Aug 2002 13:36:06 GMT

Jon,

I could have sworn that your DVD would show up as a sequential device. Obviously I was mistaken - thanks.

Pete

Re: Booting from CDrom

CDI Support — Fri, 16 Aug 2002 15:45:38 GMT

Try this:

1. before shutting down run command
# lvlnboot -v

It is going to show you the boot hard disks like this:
Boot Definitions for Volume Group /dev/vg00:
Physical Volumes belonging in Root Volume Group:
/dev/dsk/c1t2d0 (0/0/1/1.2.0) -- Boot Disk
/dev/dsk/c2t2d0 (0/0/2/0.2.0) -- Boot Disk

Then try This command
# ioscan -kfCdisk|grep ROM
it will show hardware path for your DVD .. like this:
disk 0 0/0/1/0.2.0 sdisk CLAIMED DEVICE HP DVD-ROM 3
05

Then reboot the server and interrupt boot process. At the command menu prompt you can again run a search to fing your bootable DVD. Put the bootable disk in drive and run command at the menu

> sea ipl

This will show you all bootable devices.

Once you get the prompt back then type

boot < the hardware address >

for my case it is 0/0/1/0.2.0

For loading OS you may say no to interact ipl question.

Good luck,

Mainak