Apple’s iMac Pro ships with a new feature, called Secure Boot, which takes advantage of the onboard Apple T2 chip, an ARM processor similar to the one in an iPad or iPhone, allowing the computer’s firmware to validate the bootloader prior to loading.
The T2 chip validates the entire boot process when the power comes on whilst ensuring that the lowest levels of software aren’t tampered with and that only the initial bootloader and operating system software trusted by Apple loads at startup.
What is Secure Boot?
Secure Boot is a new feature exclusive to iMac Pro that helps ensure your computer always starts up from its designated startup disk and always from a trusted operating system.
Secure Boot settings are available within Startup Security Utility, which is only accessible through macOS’s Recovery Mode.
Startup Security Utility offers the following toggles to help secure your iMac Pro against unauthorized access (we’ll detail all three settings in this article):
- Firmware password protection—Prevent the computer from starting up without providing your firmware password.
- Secure Boot—Adjust the startup security level of your computer.
- External Boot—Disallow booting from external media.
Keep in mind that iMac Pro currently does not support booting from network volumes although NetBoot is probably coming to Secure Boot in a future software update.
Read more at idownloadblog.com