By default when you open your Terminal you’ll be inside the
/Users/UserName directory. But what if you need access to the root directory of your Mac?
Well, you can always
cd .. a couple of times, to move backwards from
/ (the root).
But that’s a waste of time, instead run this command:
This will open a Finder window at the very root of your Mac computer, which gives you access to the Macintosh HD, Network and Remote Disc directories.