- Nov 18, 2009
- PRIME Z490-A
- Core i5 10600K
- Radeon RX Vega 56
- Classic Mac
- Mobile Phone
In order to test your system definition, navigate to the upper left corner and choose About This Mac. A window will open showing the booted system definition. If this shows iMac (Late 2013) you will need to change your system definition before installing macOS Big Sur. In fact, you will not be able to download macOS Big Sur until you change it.
This is a pain for real 2013 iMacs, as they now have to trick the OS into supporting their platform. However for CustoMacs running Clover, changing your system definition is very simple.
1. Get the latest version of MultiBeast for Catalina
2. Choose Customise > System Definitions > iMac > iMac19,1
3. Choose Build > Install
4. Reboot system
Please note, OpenCore bootloader has a separate method for adding system definition. You may use a text editor such as ProperTree on config.plist or an app such as OpenCore Configurator.
Hope this helps!