ioscan -fnC - cdrom not showing as a device

[Keith Bevan_1]

Our L Class Hp9000 running HPUX 11i has an issue with an internal cdrom drive :-

The device file exists in /dev but is not visible through ioscan -fnC.

The device has been visible as a claimed device previously, and also as NO HW prior to the last shutdown.

Any ideas on how to rectify this issue and rec laim the device.

Keith

[James R. Ferguson]

HI Keith:

A "NO HW" from 'ioscan' means that the device is not responding. Check your connections to the drive. If connectivity is sound, you may have a bad CD drive. The device file will not disappear unless you remove it, regardless of the hardware state.

Regards!

...JRF...

[A. Clay Stephenson]

I assume that you actually did ioscan -C disk -fn.

The NO_HW is a giveaway. It means that the device is no longer recogized and almost always means a hardware failure. You can check the cables, termination, and power connection but I am almost positive that it is time to call your HP Mr. Goodwrench and have the drive replaced. I also assume that you have not added any other devices to the same bus and duplicated ID's.

[vofsky]

Hi Keith,
You could check the cables, termination, and power connection and try to following command:insf -e ,ioscan -fnC disk.

[Michael Tully]

On an L class the CD is internal, so it is on the internal SCSI BUS. Instead of fooling around with termination etc. (You must know what your doing) call your local HP response centre and get a hardware CE on site. Fooling around with equipment that is alien to you may make matters worse.

[Denver Osborn]

just curious... could you post and attach your output from "ioscan -fn"?

Also, the output from lssf will verify if the h/w is not seen.

# lssf /dev/dsk/cXtXdX

it would show --> "at address ???" for the h/w path.

-denver

[twang]

Hi Keith,

I have similar experience regarding an external DVD rom, the output from "ioscan -fnC disk" shows "NO HW", eventually I found the problem was caused by the bad cable.

[Steven E. Protter]

Stick a fork in it its done.

May be a cable, power connect, probably the drive though.

I've replaced one on my own now. Its not so bad, just be careful setting the SCSI address.

SEP

[Suresh Patoria]

HI,
You sould use the ioscan -fnC disk command to display the CDROM device

[Keith Bevan_1]

Thanks to everyone who took the time to post advice on this matter.

The outcome was a Hardware fault with the CD Rom Drive, and this has now been replaced by an HP Engineer.

Keith