Connect to MAC


I heve problem in install the softwares on MAC

The case is I had one MAC computer has the software already installed but I want to connect it to different WD Essential DX4000 so I delete the dashboard and lunchpad and try to connect to the new storage server but when I want to install it it give me that the software already installed.

I know ZERO about Mac’s but look at this.

I delete everything related to windows server but it didn’t work 

I think I have to reset the MAC and install it again