To edit the Mac’s hosts file only requires a few steps. This file is a text file that is used to map hostnames to external IP addresses. Software vendors usually do this so they know who is using their software. As you open a program like Photoshop it looks for the Adobe validation servers. If you prefer to block Adobe from doing this, the Mac hosts file is the file you want to edit. Again, this procedure prevents any software from forcing your computer to access an external IP address by blocking particular address inside the hosts file. Brilliant. So here’s how to edit the Mac hosts file on Yosemite OS X. There are a few different ways to do this, but I think this is the most straight forward.
The Mac Finder is equivalent to Windows Explorer. The difference, the Mac Finder will sometimes open after you turn on your computer. Unless you live in Finder, you probably don’t want this. The good news, there is a way to prevent finder from opening at startup. In this video I am going to show you step by step how to correct this annoying problem. These steps will work on most versions of Mac OS. In this video I am using Yosemite. If you still have problems with the Mac Finder let me know in the comments.