Hello Linux Geeksters. As you may know, the Windows 8 computers come with UEFI Secure Boot. Via UEFI, Microsoft allows the users to boot only an operating system. The latest Linux systems already come with UEFI support, in order to bypass Microsoft’s trickery.
If you have installed an Ubuntu, Linux Mint, Elementary OS or other Ubuntu derivates on a UEFI computer and now, it boots only under Linux because the Grub does not recognize the Windows partition, you have to install the Boot-Repair app, in order to recover the other OS.
In this article I will show you how to install Secure Boot 3.1.99 on Ubuntu 13.10 Saucy Salamander, Ubuntu 13.04 Raring Ringtail, Ubuntu 12.10 Quantal Quetzal, Ubuntu 12.04 Precise Pangolin, Linux Mint 16 Petra, Linux Mint 15 Olivia, Linux Mint 14 Nadia, Linux Mint 13 Maya and Elementary OS 0.2 Luna.
Because it is availabie via PPA, installing Boot Repair 3.1.99 on Ubuntu, Linux Mint and Elementary OS is easy. All you have to do is add the repository to the system, update the local repository index and install the boot-repair package:
$ sudo add-apt-repository ppa:yannubuntu/boot-repair
$ sudo apt-get update
$ sudo apt-get install boot-repair
seen on lffl.org