On Fri, Aug 28, 2015 at 9:37 PM, Paul Cartwright pbcartwright@gmail.com wrote:
http://www.instructables.com/id/Dual-Boot-Ubuntu-and-Windows-8-UEFI/step4/De...
Then it is necessary to deactivate the Secureboot. This tool was implemented in Windows 8 with the new UEFI Bios, as a safety mechanism to prevent malicious software from booting in your PC, as well as “non authorized” operating systems.
Therefore, this tool will block any operating system from starting, besides Windows 8. So it must be deactivated.
That URL's inaccurate.
Fedora (and Ubuntu) have an MS-signed shim that interfaces between the EFi firmware's SB and grub.