Recently I picked up a PowerBook, and while I expected it to be “okay”, I did not expect to fall in love with OS X the way that I have. I am completely smitten. So much so that I had to pick up a Mac mini so that I would have a desktop Mac solution (and because it just calls your name when shopping at the Apple Store). The 80 GB version struck my fancy, but soon I realized that I am not one that enjoys playing mouse cursor beach ball all that much. The mini had half a gig of RAM in it, but the 4200-RPM drive was just holding me back. It was time to upgrade to a 5400 RPM 100 GB drive. Rather than taking it in to a service center where they would overcharge me, I did it on my own. If you want to upgrade your Mac mini’s hard drive, read on for our tutorial which takes a look at backing up your data, replacing your hard drive, and restoring your data.