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tldr/pages/linux/grub-install.md
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grub-install: add simplified example, sudo, and help (#17418) 
* Update grub-install.md

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* Update grub-install.md
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grub-install

Install GRUB to a device. More information: https://www.gnu.org/software/grub/manual/grub/html_node/Installing-GRUB-using-grub_002dinstall.html.

  • Install GRUB on a BIOS system:

sudo grub-install {{path/to/device}}

  • Install GRUB on a BIOS system while specifying architecture:

sudo grub-install --target {{i386-pc}} {{path/to/device}}

  • Install GRUB on an UEFI system:

sudo grub-install --efi-directory {{path/to/efi_directory}}

  • Install GRUB on an UEFI system while specifying architecture and boot menu text:

sudo grub-install --target {{x86_64-efi}} --efi-directory {{path/to/efi_directory}} --bootloader-id {{GRUB}}

  • Install GRUB pre-loading specific modules:

sudo grub-install --target {{x86_64-efi}} --efi-directory {{path/to/efi_directory}} --modules "{{part_gpt part_msdos}}"

  • Display help:

grub-install {{[-?|--help]}}