show boot {on <DEVICE-NAME>}
      show boot {on <DEVICE-NAME>}
         | boot | Displays primary and secondary image boot configuration details (build date, install date, version, and the image used to boot the current session) | 
| on <DEVICE-NAME> | Optional. Displays a specified device's boot configuration 
 Note: Use the on
                              <DEVICE-NAME> option to view a remote device's boot
                           configuration. | 
nx9500-6C8809#show boot
--------------------------------------------------------------------------------
     IMAGE            BUILD DATE             INSTALL DATE          VERSION
--------------------------------------------------------------------------------
  Primary       09/11/2019 06:24:04     09/11/2019 23:40:05     7.2.1.0-014R
  Secondary     09/17/2019 16:46:20     09/20/2019 13:06:48     7.3.0.0-001D
--------------------------------------------------------------------------------
Current Boot       : Secondary
Next Boot          : Secondary
Software Fallback  : Enabled
VM support         : Not present
nx9500-6C8809#
         nx9500-6C8809#show boot on ap505-134038
--------------------------------------------------------------------------------
     IMAGE            BUILD DATE             INSTALL DATE          VERSION
--------------------------------------------------------------------------------
  Primary       09/17/2019 15:07:20     09/20/2019 13:28:06     7.3.0.0-001D
  Secondary     09/11/2019 06:24:04     09/11/2019 23:40:05     7.2.1.0-014R
--------------------------------------------------------------------------------
Current Boot       : Primary
Next Boot          : Primary
Software Fallback  : Enabled
VM support         : Not present
nx9500-6C8809#