Wednesday, July 4, 2018

boot - GRUB not showing up


I installed Ubuntu 14.10 alongside windows 8.1 and it was working fine until I ran the CHKDSK command in windows now when I restart the PC, there is no GRUB screen and the PC boots directly into windows. I used the boot-repair-disk but no luck. My secure boot is off and I also tried to reinstall GRUB using this but still no luck. I know there are A LOT of threads similar to this but I have tried methods given in several of those but no luck :( Here is the URL I got after using the recommended repair option in Boot-repair:



Use a Ubuntu Live CD, launch a terminal console and type:


sudo su Enter


gparted Enter


Observe what is the Ubuntu partition. Probably it will be /dev/sda2. Assuming that, then, it closes gparted and (sudo is not required because you are already root with sudo su):


mount /dev/sda2 /mnt Enter


mount -B /dev /mnt/dev Enter


chroot /mnt Enter


grub-install /dev/sda Enter


reboot Enter


Then you will have grub2 re-installed.


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