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I just installed Windows 8.1 on my system. After installing windows as always grub was replaced with windows bootloader. So I booted my fedora live USB and tried to restore the grub. The installation was sucessfull and it detected all my currently installed systems(Windows,Fedora24,Ubuntu16.04). After rebooting I was dropped into grub rescue. So I typed the following.

insmod normal    
normal

After that I was given access to grub again but this time with all the OS in the list including the newly installed Windows8.1. Is there any way to fix this,cause everything is working fine just at every boot I need to type the above commands.

UPDATE : I kind of screwed up I generated

grub2-mkconfig -o /boot/grub2/grub.cfg

the grub now loads fine but cannot detect Ubuntu.

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    Add those commands to /boot/grub/grub.cfg Nov 16, 2016 at 11:00
  • check again @IporSircer
    – 4bh1
    Nov 16, 2016 at 11:54
  • Add those lines manually after grub2-mkconfig finished its job. Nov 16, 2016 at 11:55
  • Are you using efi boot?
    – GAD3R
    Nov 16, 2016 at 12:05

2 Answers 2

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There was missing /boot/grub2/grub.cfg ,so I generated with the help of grub2-mkconfig.

There was another problem os-prober was unable to detect the Ubuntu. So I just mounted the Ubuntu file system and os-prober was able to detect Ubuntu.

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To update GRUB 2 configuration on UEFI systems you should specify the correct file:

EFI boot:

grub2-mkconfig -o /boot/efi/EFI/fedora/grub.cfg

On legacy boot :

grub2-mkconfig -o /boot/grub2/grub.cfg

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