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* (signature database (db) - signatures or image hashes of UEFI applications, operating system loaders, and UEFI drivers that can be loaded A: There are a number of databases kept by Secure boot:.Q: What are all these secure boot databases that are talked about?.
Windows 8 will boot ok with Secure boot disabled. Q: If I disable Secure boot, and I have a dual boot setup with Fedora and Windows 8, will Windows 8 boot ok?.Servers will not have secure boot enabled by default. This is a Windows 8 client ready set of requirements. A: Fedora is not responsible for the Windows 8 ARM requirements.
Q: What about the Fedora ARM folks, if UEFI cannot be disabled ? What will the impact be, if we ever are able to install Fedora on to mobile phone units ? Does this not limit users choice ?. Fedora has no plans to support secure boot on that platform and suggests buying Non Windows 8 ready hardware. A: On ARM Microsoft Windows 8 ready requirements say that Secure boot should be enabled by default and cannot be disabled. A: If you ship the Fedora boot shim, grub2 and kernel unchanged, your remix or distro will boot on secure boot enabled machines (if the proposed plan is approved). Q: What if I want to make a Fedora remix or distro based on Fedora?. A: You will need to disable Secure boot, or setup your own keys and sign everything with them. Q: What if I want to build a custom kernel or load 3rd party kernel modules?. Individual users do not need to pay $99 unless they wish to build their own UEFI applications and get them signed independently. The Fedora shim binary has been signed via the Microsoft service and the $99 fee has already been paid. A: There is a one time fee of $99 to access the Microsoft sysdev portal in order to get your binaries signed by the Microsoft key (shipped by default in all Windows 8 ready devices). You will need to sign and install the various components with your new keys. According to the UEFI and Microsoft Windows 8 ready requirements you can remove all the keys and enroll your own. Q: Can I remove the Microsoft key and use my own?. A: Yes, the Microsoft Windows 8 ready requirements require that to be the case. Q: Are you sure secure boot will be possible to disable in the firmware?. Sadly, we can only work with the plans as we know them. A: Feel free to contact any of the above and ask them to change their plans. Q: I think it would be much better if "Microsoft or UEFI or All hardware OEMs or The Government" would just "do X". Historical discussion - Steering Committee as of 2. Miscrosoft intro to Secure boot tech paper:. 
Free software Foundation on Secure boot:. A customisation of these packages may require signing these using pesign to be able to boot on secure boot enabled machines. A Fedora remix or Fedora based distribution can ship the Fedora shim, grub2 and kernel unchanged. Fedora releases prior to Fedora 18 will refuse to boot until the user disables secure boot in the firmware. Fedora provides grub2, kernel and associated packages that are loaded by shim which is signed by Verisign (via Microsoft). Allow a physically present user to enrol their own keys in the firmware interface. Allow a physically present user to disable secure boot in the firmware interface. With the release of Windows 8, Microsoft has decided that all hardware that is marked "Windows 8 client ready" should: With the release of Windows 10, Microsoft has dropped the requirement secure boot to provide an option to be disabled and It can be disabled permanently by running: sudo mokutil -disable-validation Writing to MSRs through /dev/cpu/*/msr. Module parameters that allow setting memory and I/O port addresses. User-space access to physical memory and I/O ports. Hibernation and resume from hibernation. Using kexec to load an unsigned kernel image. Loading kernel modules that are not signed by a trusted key. Secure boot activates a lock-down mode in the Linux kernel which disables various features kernel functionality: Secure boot is a setup using UEFI firmware to check cryptographic signatures on the boot-loader and associated OS kernel to ensure they have not been tampered with or bypassed in the boot process. 4 Historical discussion - Steering Committee as of 2.
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