It is a long time since I have had hardware that is not supported, or does not appear to be supported.

I had understood that it was with several devices, AND that these are "partitions" with all resources assigned to them.

Please run the following commands:

odmget -q name=cd0 CuDv

odmget -q name=cd0 CuAt

lsdev -C | grep cd0

and lastly, the output (error message) of cfgmgr and also of oslevel -s

Michael

Have you verified that the CD can be read by any system? I do not think it is a 100% check, as it is not booting, but can a PC read the CD?

Seems very strange that three systems cannot read the disk.

And, also, I would recommend verifying the firmware levels of the systems and the devices. The easiest way is to probably download the .iso image and burn that to a CD - except you cannot read the CD - chicken/egg problem. So, burn the CD and then ftp the files to an AIX system. There is also a README file to explain how you can run the commands and queries from a command line.

Quicklink via vgBookmarks vgBookmarks->Downloads->Maintenance Microcode update files on CD-ROM (http://rootvg.net/component/option,com_bookmarks/Itemid,90/task,view/id,239/)

p.s. There seems to be two .iso images. Probably you need the:
io_image.iso: Created May 07, 2008
I/O Microcode Update Files and Discovery Tool CD-ROM image