I'm trying to dual boot Windows 8.1 and Ubuntu and a solution I have come accross requires me to do some copying and pasting to get grub to appear. (My problem is that grub never shows up).
Here are the instructions from the AskUbuntu question:
mounting /dev/sda3 from live-session
copy EFI/ubuntu/grubx64.efi to EFI/Boot/ rename EFI/Boot/bootx64.efi to bootx64.efi.old rename EFI/Boot/grubx64.efi to bootx64.efi now it booted directly into grub2, but without win7 entry
after loading ubuntu I edited
/etc/grub.d/40_custom adding
menuentry "Windows 7" { set root='(hd0,gpt3)' chainloader /EFI/Microsoft/Boot/bootmgfw.efi } and after
sudo update-grub My problem:
When I try to copy those files using the Files app, I'm given a permission error. I have no idea how to proceed. Please please help me out. Thank you.
1 Answer
That is because you need to launch the file browser with admin privileges, and to do that, open a terminal window (ctrl-alt-t), type sudo -i to become root user, then type nautilus to launch the file browser.
summary:
ctrl-alt-t sudo -i nautilus 
