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grub-mkrescue — Make a GRUB CD/USB/floppy bootable image. More information: <https://www.gnu.org/software/grub/manua

Submitted by: @import:tldr-pages·Mar 2, 2026·

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linux

Problem

How to use the grub-mkrescue command: Make a GRUB CD/USB/floppy bootable image. More information: <https://www.gnu.org/software/grub/manual/grub/grub.html#Invoking-grub_002dmkrescue>.

Solution

grub-mkrescue — Make a GRUB CD/USB/floppy bootable image. More information: <https://www.gnu.org/software/grub/manual/grub/grub.html#Invoking-grub_002dmkrescue>.

Create a bootable ISO from the current directory and save it as grub.iso:

grub-mkrescue --output {{grub.iso}} .

Create an ISO using GRUB files from a custom directory:

grub-mkrescue --directory {{/usr/lib/grub/i386-pc}} --output {{grub.iso}} {{path/to/source}}

Use compression for GRUB files when building the image, setting no disables compression:

grub-mkrescue --compress {{no|xz|gz|lzo}} --output {{grub.iso}} {{path/to/source}}

Disable the GRUB command-line interface in the generated image:

grub-mkrescue --disable-cli --output {{grub.iso}} {{path/to/source}}

Preload specific GRUB modules into the image:

grub-mkrescue --modules "{{part_gpt iso9660}}" --output {{grub.iso}} {{path/to/source}}

Pass additional options directly to xorriso:

grub-mkrescue --output {{grub.iso}} -- {{-volid}} {{volume_name}} {{path/to/source}}

Display help:

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

Display version:

grub-mkrescue --version

Code Snippets

Create a bootable ISO from the current directory and save it as `grub.iso`

grub-mkrescue --output {{grub.iso}} .

Create an ISO using GRUB files from a custom directory

grub-mkrescue --directory {{/usr/lib/grub/i386-pc}} --output {{grub.iso}} {{path/to/source}}

Use compression for GRUB files when building the image, setting `no` disables compression

grub-mkrescue --compress {{no|xz|gz|lzo}} --output {{grub.iso}} {{path/to/source}}

Disable the GRUB command-line interface in the generated image

grub-mkrescue --disable-cli --output {{grub.iso}} {{path/to/source}}

Preload specific GRUB modules into the image

grub-mkrescue --modules "{{part_gpt iso9660}}" --output {{grub.iso}} {{path/to/source}}

Context

tldr-pages: linux/grub-mkrescue

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