These Macs have the Apple T2 Security Chip: Anyway, long story short… it might be a good idea to disable this feature before it’s too late. The average user has to worry about the day an external device boot is required in order to save the data on that Mac. Most or, better said, the average user doesn’t have to worry about evil maid attacks. I would argue that it’s detrimental to most users. Some people would argue that this security setting is recommended for most users. The chip is responsible for a lot of things, and one of them is not allowing you to boot from an external device. So how about today we’re switching things around, and install Linux on a Mac? But instead of virtualizing it, which is trivial, we install Linux on bare metal. You can even install macOS Catalina in a Docker contrainer in Linux. You can install macOS Catalina and macOS Big Sur on Linux.
