Job well done! I have a Mac Mini Late 2014 with 500GB HDD. I saved $89 that local shop was demanding, by doing this myself. You have documented very precisely the steps. There were no ambiguities. I figured out upfront that tracking back tiny screws while re-assembling would be a daunting task. Here is what I did. Got a dozen of small tiny zip lock covers and small yellow post-it stickers. Each step that involved removing screws, I put those tiny screws safely in a new ziplock cover and pasted a label that reads “Step nn”. Now reassembly was a piece of cake following these instructions. Dis-assembly and re-Assembly was no problem. Took me some 1 hr to do it. I suggest using some magnifying glass or just a low power reading glass, even if you have normal vision. This really helps. Thank you for your help and posting to community. It is a great feeling when we do the job ourselves, there is satisfaction.