As pointed out by Peng (pengwg) at #2, this might be confirmed a bug of grub 2.02. I upgrade my 13.10 to 14.04 (grub was upgraded to grub~beta2~9), then I encountered this problem.
My machine is with UEFI. When I see this error, I restarted my computer and selected boot from UEFI file. Then I navigated to the ubuntu uefi file and started my computer successfully. I tried the simple "sudo grub-install --recheck /dev/sdX" way. But it didn't work.
The I downgrade all the grub components: grub-common, grub2-common, grub-efi, grub-efi-amd64, grub-efi-amd64-bin to version 2.0. Rerun that "sudo grub-install --recheck /dev/sdX", restarted computer. Everything is back now. For me this owngrading of grub works.
Possibly a bug with grub-install in the 2.02 verion.
As pointed out by Peng (pengwg) at #2, this might be confirmed a bug of grub 2.02. I upgrade my 13.10 to 14.04 (grub was upgraded to grub~beta2~9), then I encountered this problem.
My machine is with UEFI. When I see this error, I restarted my computer and selected boot from UEFI file. Then I navigated to the ubuntu uefi file and started my computer successfully. I tried the simple "sudo grub-install --recheck /dev/sdX" way. But it didn't work.
The I downgrade all the grub components: grub-common, grub2-common, grub-efi, grub-efi-amd64, grub-efi-amd64-bin to version 2.0. Rerun that "sudo grub-install --recheck /dev/sdX", restarted computer. Everything is back now. For me this owngrading of grub works.
Possibly a bug with grub-install in the 2.02 verion.