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How to re-install the GRUB 2 boot-loader on Fedora Core Linux with the command line.

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To re-install the bootloader for Fedora Core 19; you must first load into your Linux installation with a chroot. This post will explain this process.

https://securitronlinux.com/bejiitaswrath/re-installing-the-grub2-bootloader-using-a-chroot-with-linux-mint-14/.

Then, once you are in the chroot environment, the following commands will re-install GRUB for you.

root@neo homer# grub2-install /dev/sda
Installation finished. No error reported.

This will properly re-install the GRUB2 bootloader and then you will be able to boot Fedora properly.

And then if you wish to generate a new GRUB 2 configuration; use this command.

root@neo homer# grub2-mkconfig > /root/grub.cfg
Generating grub.cfg ...
Found linux image: /boot/vmlinuz-3.9.5-301.fc19.x86_64
Found initrd image: /boot/initramfs-3.9.5-301.fc19.x86_64.img
Found linux image: /boot/vmlinuz-0-rescue-d622a566f4ac4b49b1cb43d7e2a94323
Found initrd image: /boot/initramfs-0-rescue-d622a566f4ac4b49b1cb43d7e2a94323.img
Found Windows 8 (loader) on /dev/sda1
done

This file may then be copied to the /boot/grub2 directory once you have confirmed that the command completed successfully. I just took a hard drive out of my computer and the hard disk I removed had the GRUB bootloader on it. Therefore I had to press F12 and boot from another drive. I was able to boot Fedora and then I could re-install the bootloader using the grub2-install command.

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