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,
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")