Uninstall and Configure Exchange 2010 servers to test DAG’s

Â
I am currently having trouble uninstalling Exchange 2010 on one of my servers. I suspect that my efforts are failing mainly because the database folder for this server has not been installed. As a result of this it needs to check for local copies.
I have two Exchange 2010 servers. With the second server, I am trying to configure it to test DAG’s but haven’t quite figured out how to do this. I had the Log and DB drives of these server pulled from  first server. On making use of the M: recover switch to recover the server image and thus enabling Exchange to run properly, no log files/databases were found. The first server is in use and it is running well and it has the only functional public folder and mailbox database. I am now seeking your guidance to help me figure out this problem that is blocking me from uninstalling.
