About tracking the progress of silent installation
When a silent installation is in progress, you can see SETUP.EXE process running in the Processes tab of the Windows Task Manager. In addition, you will also find multiple msiexec.exe processes running in the Task Manager.
You can also track, if a silent installation is in progress by checking the size of bkuptemp.log file. The size of bkuptemp.log file increases as silent installation progresses. The bkuptemp.log file is generated in %ALLUSERSPROFILE%\SYMANTEC\OPSCENTER\INSTALLLOGS.
Once the installation is complete, the installer converts bkuptemp.log to an HTML file.