Using ioreg To Test For a TPM

ioreg is a command-line program used to display information from the Mac OS X I/O Registry (a list of devices and drivers on the system). You can run ioreg from a terminal (open Terminal.app (using the Finder, it should be here: 'Applications -> Utilities -> Terminal.app')

If a TPM is installed on your Mac, it should be listed in the I/O Registry. Type the following command and note the output: if it resembles the output below then you have a TPM, if there's no output then you probably have no TPM.

$ ioreg | grep TPM | +-o TPM $