if you use VIO Server and need to share CD or TAP UNIT or Disks from VIO to LPAR, and after finishing from Mapping Configuration and try to run “cfgmgr on the LPAR,
The following series of commands demonstrates how to set the PVID of an AIX disk to a specific value like “0123456789abcdef”: Note: Setting PVID like this should be avoided normally. It may cause unwanted consequences in your environment.
Go to admin panel > Users > Your Profile > About Yourself > Biographical Info > Fill is text area > and click: Update Profile button. note:only for admin OR click here(..or for "user ID : 1")