Guys this weekend I'm going to empty my stick & put the most recent installer(10.12.5?)/patch on it, so I can finally attempt this on my 09 mini. I'm confident I can pull it off.... silly question tho, I don't want to lose my data/settings, so this will go just like all my previous macOS upgrades right, nothing gets deleted? (I just gotta make sure I skip step 5/6).
thats exactly what I did - skipping 5&6 - acts a simple upgrade, nothing gets lost