Is there anyway that I can manually create a PID for the MySQL instance?

I am running MySQL on a linux server. I have taken a copy-back mysql enterprise backup from another linux full backup. Ever sense then I have had problems getting MySQL to start. The problem is that MySQL is not updating the PID file, it's not even create a PID file. Is there anyway that I can manually create a PID for the MySQL instance? One work around that I have been able to implement is the using the mysql-debugger which creates its own pid, but when I stop the debugger it still won't create/update the PID file.