RHEL 7 beta can be installed on systems with 'Secure Boot' enabled as seen in the Installation Guide [1]. More info about Secure Boot is available from Fedora docs and the links therein [2,3] Question is how the implementation of Secure Boot should be handled in CentOS. Akemi [1] https://access.redhat.com/site/documentation/en-US/Red_Hat_Enterprise_Linux/7-Beta/html-single/Installation_Guide/index.html#chap-UEFI_Secure_Boot-Configuration [2] https://fedoraproject.org/wiki/Secureboot [3] http://docs.fedoraproject.org/en-US/Fedora/18/html/UEFI_Secure_Boot_Guide/index.html