I'm dual booting Linux with Windows 10, and after the "Creator's Update" for Win10 my Linux installation stopped booting correctly. It opened to the Grub prompt, and from there I could direct it to the right directory and boot manually.
While trying to fix the problem, I made it worse. I ran some commands to attempt to update Grub and reinstall it.
Now I can't boot to Linux or access the grub prompt; when I boot to Linux, it leads me to an empty black screen with nothing but a flashing underscore. I can't input anything, except Ctrl Alt Del to restart. If I hold down shift while it's booting up, instead of just a flashing underscore, it says GRUB and a flashing underscore. It still doesn't let me input any commands.
Does anyone have any idea what the problem might be, and how I can fix it?
Best Answer
you can fix it by booting with a live CD. Then mount the partition that contains your ubuntu installation somewhere, then chroot into it and edit /boot/grub/grub.cfg to correct the menu entry.
So, once you've booted the live CD version (you can boot from an USB drive also) do the following:
hope this helps