On Fri, Nov 25, 2016 at 8:44 AM, <octysro@gmail.com> wrote:
So I am currently having this issues : my hdd is not listed in the bios boot menu after installing Fedora in dual boot with Windows 10. To check if all the partitions are ok, I used the Fedora live and everything seems ok. It lists both windows and the freshly created Fedora partitions. Still, when i reboot and get into BIOS the only boot option is the DVD. Is it possible that the windows didn't shut down completely before installing Fedora and now the hdd is still mounted somehow , hiding it from the bios boot menu? Any ideas for making the hdd visible again?

Is this a UEFI box or is it running classic BIOS? 

In my limited experience, classic BIOS will list all the detected devices if that box supports booting from that type of device. UEFI boxes (again, in my limited experience) will only offer to boot from a device if it has the appropriate filesystems/files on it.

If you booted in classic BIOS mode to install Fedora, the installer would setup the bootloader accordingly. If you then switch back to UEFI mode and try to boot from the HDD, it won't work.