Insert the flash drive in the unsupported Mac.Insert the USB drive and then choose to Create a Bootable Installer. After the download is done, you will be able to choose the installation method.Since the installer is around 8 GB in total, you need to wait until the download is complete.You need that because you are creating a bootable USB drive installer here. Run the app now you will have to download a copy.Download the latest macOS Catalina patcher.How can you create the Patched macOS Catalina installer? MacOS Catalina is fully 64bit, and as such, you should check both your CPU and EFI firmware before installing.

So yes, you can install this on much older systems if you use the patcher. Keep in mind that Catalina works only on 2015+ MacBooks, 2012+ Macbook Air and Pro models, the 2017 iMac Pro, late 2013 Mac Pro or Newer and the Late 2012 Mac Mini or Newer.

With the patcher tool method listed below, you can install Catalina on the Early-2008 or newer Xserve, Early-2009 or newer Mac Mini, Late-2008 or newer MacBook Air or unibody unit or any Mac Pro, MacBook Pro or iMac after 2008. You also need to create a backup for your Mac’s information, to be safe. The drive needs to have 16GB, and it has to be formatted in the Mac OS Extended format. To install Catalina on your Mac, you will need to download and create a bootable USB installation drive. It does require a bit of thinking outside the box, but it’s going to be worth it, and it will be quite the experience. There are some methods you can use to install Catalina on your unsupported device.

But even if it might not seem possible to install Catalina on your Mac due to the requirements, you shouldn’t worry that much. MacOS Catalina has precise requirements, you will need to have the previous OS version, and it works only on specific MacBooks, iMacs and so on.

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