I am using Ubuntu 17.04, grub-efi with dual boot (Windows 10). Everything used to work when 16.04 was installed.
After the upgrade I also got the 'no symbol table error' and I was not being able to boot into Windows, with grub being unable to recognize the EFI (fat32) partition as a proper filesystem.
I fixed it by using the 'update-grub' command. But if I boot into Windows and restart, all the errors come back.
I am using Ubuntu 17.04, grub-efi with dual boot (Windows 10). Everything used to work when 16.04 was installed.
After the upgrade I also got the 'no symbol table error' and I was not being able to boot into Windows, with grub being unable to recognize the EFI (fat32) partition as a proper filesystem.
I fixed it by using the 'update-grub' command. But if I boot into Windows and restart, all the errors come back.