Can't boot ubuntu 13.10 after install Fedora 20 on a x86_64 EFI machine
Solution 1:
Recently I was faced with this problem after updating the grub configuration file in Fedora.
To deal with it I had to edit the /boot/efi/EFI/fedora/grub.cfg file as follows:
replace all
linuxwithlinuxefireplace all
initrdwithinitrdefi
You can also press e while on the grub menu entry to edit it, and do the previous steps.