Mojave runs PERFECTLY on a mid-10 iMac AFPS partition HDD with High Sierra on the HFS partition. The early 09 Minis w/SSD (HFS ONLY on the early 09 Minis) 8GB RAM are more nimble than El Capitan on Mojave but require USB WI-FI.(EDIMAX EW-7822ULC works great w/the Sierra drivers found on their website) Mojave becomes quite calm after a SMC reset.
Jun 04, 2018 Apple this morning introduced macOS 10.14 Mojave, the newest version of the operating system designed to run on the Mac. IMac Pro (2017) Mac Pro (Late 2013, plus mid 2010 and mid 2012 models.
Apple's new macOS Mojave update is not compatible with mid-2010 and mid-2012 Mac Pros with stock GPUs, but it is supported on 2010 and 2012 Mac Pro models that have been upgraded with graphics.
Check compatibility
You can upgrade to macOS Mojave from OS X Mountain Lion or later on any of the following Mac models. Your Mac also needs at least 2GB of memory and 12.5GB of available storage space, or up to 18.5GB of storage space when upgrading from OS X Yosemite or earlier.
If your Mac is too old to install macOS Mojave, you can still upgrade to the latest version of macOS that is compatible with it, even if you can't find those versions of macOS in the Mac App Store. Apple has pages for High Sierra, Sierra and El Capitan than include links directly to the hidden Mac App Store pages with those downloads.
Imac Mid 2011 Upgrade To Mojave Catalina
Check out Upgrading Older Macs To Earlier Versions Of macOS at YouTube for closed captioning and more options.
Install Mojave On 2011 Imac
Related Video Tutorials: A Look At the New TV App in macOS Catalina ― 3 Alternatives To Using macOS Dictation