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How can I reinstall GRUB to efi?
Use chroot to install grub to the device
- Enter the RFS directory: $ cd /rfs.
- Create the EFI directory under boot: $ sudo mkdir -p boot/efi.
- Bind mount the /dev, /sys, and /proc directories.
- Bind mount the your EFI mount point directory:
- Enter the chroot jail:
- Install grub to your Linux partition.
What is GRUB efi file?
efi is the the from the –bootloader-id from the grub-install command above. This will temporarily add a UEFI boot option for the next boot to get into Arch. Once in Arch, modprobe efivars and confirm that efibootmgr creates no errors (no errors meaning you successfully booted in UEFI mode).
Where can I find GRUB 2 EFI binary?
The GRUB 2 EFI binary (grubx64.efi, typically) can be installed alone in its subdirectory of the ESP. This binary will then access additional support and configuration files on your Linux root (/) or /boot partition. This is the method that Ubuntu and OpenSUSE use.
Can a Linux kernel be booted without the EFI Boot Stub?
By using the EFI boot stub it’s possible to boot a Linux kernel without the use of a conventional EFI boot loader, such as grub or elilo. Since the EFI boot stub performs the jobs of a boot loader, in a certain sense it IS the boot loader.
How can I reinstall Grub to the EFI partition?
To identify the partitions use GParted, the tool is included in the installation medium. After having run the commands GRUB will be installed in the separate EFI partition. this is the only way that worked for me: (System: sdb8, boot: sdb6, efi: sdb2)
How to specify multiple initrd files in EFI STUB?
Like most boot loaders, the EFI stub allows the user to specify multiple initrd files using the “initrd=” option. This is the only EFI stub-specific command line parameter, everything else is passed to the kernel when it boots. The path to the initrd file must be an absolute path from the beginning of the ESP, relative path names do not work.