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macOS 10.14 Mojave on Unsupported Macs Thread WikiPost. dosdude1; Jun 4, 2018; 795 796 797. Replies 20K ...
Remember: Apple Mojave recommend RX-560/580 cards do not have pre-boot configuration support (aka boot screens), so you need to install your original Mac EFI GPU to upgrade your BootROM to MP51.0089.B00 using the Mac App Store High Sierra 10.13.6 full installer.
Spoiler: AMD Radeon HD 5xxx/6xxx Series Video Card Acceleration. Currently, it is not possible to get full graphics acceleration when running Mojave on a system with a Radeon HD 5xxx or 6xxx series video card. Mojave will be almost unusable without graphics acceleration. This includes the 15" and 17" MacBook Pro systems (MacBookPro8,2 and 8,3).
Hope this helps. My evaluation comes from very old unsupported Macs refitted to multi-boot which levels the playing field, same CPU, graphics, storage media. See the signature below for details. Basically, they perform virtually identical with a slight edge given to macOS Mojave v.10.14.3. What is amazing is a useable Big Sur runs quite snappy ...
The last official macOS release for the Mac Pro 5,1 is Mojave 10.14.6. So you can install any of the Polaris and Vega graphics cards in a 5,1 listed before macOS 10.15 provided all other requirements such as size and power needs are met. There is a detailed section towards the end of this first post about power requirements for Vega graphics cards.
I had Mojave on my mid-2015 15" MBP, but Adobe's major new update to Lightroom Classic and Photoshop were not compatible with Mojave. So, it forced me to update to Monterrey first. Although I was reluctant, I decided to do it. Installation was easy with no issues. I then updated LR and PS with no problem.
High Sierra is the last macOS that can run 32-bit apps without compromises, not Mojave. You may also consider M2/M1X and later Mac for better software emulation performance if possible. Sheer raw power sometimes can overcome hardware limitations, just like Hackintosh PC needs to be beefy enough to run macOS decently without tons of lags etc.
21. 10. Oct 9, 2018. #1. Recently, my iTunes had been running sluggishly, especially when using Apple Music functionality. In the past, something I did which was often helpful when this happened was to completely uninstall iTunes on my Mac, then download and reinstall it fresh from Apple's website. As I had done in the past, I changed the ...
Download "InstallMacOSX.dmg" 2. Double clicking "InstallMacOSX.dmg" will mount a "Install Mac OS X" volume in your desktop. 3. Open the volume to find the "InstallMacOSX.pkg". Double-click the .pkg file, then follow the onscreen instructions to install the macOS installer into your Applications folder. 4.
Section 2 - Mojave: UPDATE -- As of 10/19/19 it is much simpler to use the now released SSE 4.2 emulator which allows for many other options of macOS with this card. Dosdude has included this in the Catalina patcher only at this time, but you can use the 'AAAmouSSE.kext' across multiple versions of macOS.