Hi guys, my 2012 mini is running very slow and despite killing some rogue processes and regularly running Onyx and the like, it's still causing me problems. It's a restore of a restore of a restore, going back several Macs and about ten years. Before I drop significant money on getting a fusion drive or SSD I wonder whether I should try and get Sierra cleanly installed. But it's making me nervous - ideally I would've bought a new mini and gradually manually migrated stuff, but as we know, these aren't forthcoming. The 1TB HDD is 90% full and has been backing up to my Time Capsule and a local USB drive. It's my main machine for both work and leisure so there's a lot of stuff I can't risk losing. Does anyone know how I can do a low risk clean install while still getting back all my libraries, folders and files? I can cope with manually reinstalling software if I need to.