I just got a Mac Mini Late 2014 to be my "desktop" along side my Macbook Air 11 (2015). After watching several videos that involved upgrading the internal 5400rpm drive to an SSD but instead decided to purchase a Samsung 850 Evo 500GB in an Anker SSD 2.5' enclosure (USB 3.0) to be the "main drive". I successfully created a USB OS X install drive and installed OS X to the SSD an hour ago. Everything is PERFECT and super crazy fast. Had a period of time where WiFi wouldn't connect but then it just started working... But anyway: The internal 5400 rpm 1TB drive (I got the 2.6 Ghz/ 8GB / 1TB model) - is it safe to wipe that out? I looked into trying to move the recovery partition but since I have a Macbook Air and I use Time Machine to an external WD Passport I should be ok without it, right? Suggestions for it? Leave it alone as a backup OS? Use it to store iTunes libraries / backups? Side Note: I highly recommend anyone with a non SSD Mini (2012+) to do this. I spent $160 for the SSD and $13 for the enclosure - I'm kinda new to Mac but I have a long history of IT with Microsoft. Create an OS X install boot disk and bam, either restore from Time Machine or install OS X. You have a super super fast machine. Side Note 2: My Mac Mini hates my wireless Logitech keyboard/mouse... I have to use bluetooth keyboard (Anker)/mouse (Microsoft).