Hi, I have Mojave installed on:
Z370 Gaming 5
i7-8700
Sapphire RX 580 Pulse
I would like to have a clean installation of Catalina.
What steps I have to do?
Hi!
I am no expert but here is what I did.
Your hardware is pretty much the same as I have: motherboard is here Gigabyte Z370 Gaming 7. Catalina fresh install was pretty straight forward, I tried first fresh install on a spare HDD of course.
Update to latest kexts Lilu, whatevergreen. (also loaded here AppleALC, USBinjectall, IntelmausiEthernet, Atheros2200Ethernet) if you want to upgrade current Mojave. I have created USB kexts.
Stick with UniBeast (from current Mojave). Then installed EFI on the Catalina USB boot stick with latest version. I have replaced the EFI folder with my boot EFI (attached).
Boot with the stick and install Catalina. System will boot several times. When completed, you can install boot loader to the new HDD with MultiBeast for Catalina. Replace EFI with this one (create your own Serial Numbers. (Clover r5107 as of my install. Current Clover today is r5108).
I am on iMac18.3 SMBIOS version. This EFI folder here has iMac19.1. If you install on a fresh HDD, then you can keep iMac19.1. If you do an upgrade, I suggest you keep your current SMBIOS for now.
The ACPI patch works with my motherboard. If OK on your motherboard, I do not know! It is for newer BIOS versions on the Gaming7.