Explore the critical importance of measured boot in Linux distributions and learn why mainstream adoption has been lacking in this 39-minute conference talk by Matthew Garrett from CoreOS. Delve into the reasons behind the slow adoption, the pressing need for improvement, and the necessary steps to achieve better security. Discover how traditional measurement models fall short and how fine-grained, reproducible measurement can be implemented. Gain insights into innovative uses of Trusted Platform Modules (TPMs) for enhancing overall system quality. Learn about additional measures distributions can take to simplify trusted boot deployment for users. Examine topics such as UEFI Secure Boot, compromised servers, hardware attacks, and the role of Platform Configuration Registers. Understand the benefits of using logfiles, policy descriptions, and UEFI variables in improving boot chain security.