Packages are the most straightforward way to install GRUB2 Editor. Simply select your distribution below:
On the other hand, you may subscribe to a repository in order to automatically get new updates:
For Fedora 21 run the following as root:
cd /etc/yum.repos.d/ wget http://download.opensuse.org/repositories/home:ksmanis/Fedora_21/home:ksmanis.repo yum install kcm-grub2
For Fedora 20 run the following as root:
cd /etc/yum.repos.d/ wget http://download.opensuse.org/repositories/home:ksmanis/Fedora_20/home:ksmanis.repo yum install kcm-grub2
Note: Substitute ‘kcm-grub’ with ‘kcm-grub2-efi’ in the above commands in order to install an EFI-compatible version of GRUB2 Editor.