Create a bootable USB drive with MacOS El Capitan (or any other older macOS)
G'day. I am running macOS Monterey. I have an older MacBook Air which needs a fresh installation of an older macOS (like El Capitan). Internet is terribly slow where this device is located so I want to create a bootable USB drive with an older macOS in order to install it.
I did follow this guide: How to create a bootable installer for macOS - Apple Support (CA)
However, when downloading El Capitan and the hitting install, I get the answer that my Mac is too new and I can not install such an old version.
How can I create a USB drive with macOS El Capitan using a newer Mac?
Thanks,
Bernhard