Brian a écrit : > > 1. Boot in rescue mode. > > 2. Choose a root file system when you get to this screen. > > 3. Select 'Reinstall the GRUB boot loader." > > 4. Specify a device to install GRUB to. You don't specifiy a device when installing grub-efi. It installs in the EFI system partition mounted on /boot/efi.