58583: Macintosh: How to Use FireWire Target Disk Mode explains how to use certain Macs as external hard drives for other machines.

I have a Mac mini "Core 2 Duo" 2.4 (Mid-2010) running OS X 10.10.2 that was given to me by a coworker and I want to give it to someone who has a particular desire for this older system. I need to ...