Secure Boot on Gentoo with Shim and Grub
Enabling Secure Boot on Gentoo involves using shim to launch GRUB, ensuring signed executables during boot. Detailed steps cover key generation, package configuration, bootloader installation, and key enrollment for a secure system.
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Getting Secure Boot to work on Gentoo involves using the shim bootloader to launch a standalone installation of GRUB. This setup ensures that every executable loaded during boot is signed and verified. The process includes generating signing keys, configuring required packages like efibootmgr and shim, and installing the kernel, whether it's a Gentoo binary distribution kernel or a custom one. GRUB can also chain-load other signed UEFI executables in a dual-boot system without compromising Secure Boot. The tutorial provides detailed steps for preparing the system, setting up keys, configuring packages, installing the bootloader, and enrolling keys in the Machine Owner Key list. By following these instructions, users can enable Secure Boot on Gentoo without disabling it, even during installation using a live distribution supporting Secure Boot.
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