Grub

Kernel Boot Parameter Change

TODO: document

Similar to:

• https://grumpymole.blogspot.com/2007/05/ubuntu-how-to-edit-grub-boot-parameters.html ^[archive]
• https://wiki.ubuntu.com/Kernel/KernelBootParameters ^[archive]
• https://docs.fedoraproject.org/en-US/Fedora/22/html/Multiboot_Guide/GRUB-runtime.html ^[archive]

This is a grub, not a Whonix ™ feature. Therefore Free Support Principle applies.

Permanent Configuration Changes

1. Learn.

• See folder /etc/default/grub.d.
• See file /etc/default/grub.d/40_kernel_hardening.cfg.
• Just look around.

2. Create a new configuration file.

Open file /etc/default/grub.d/50_user.cfg in an editor with root rights.

(Qubes-Whonix ™: In TemplateVM)

This box uses sudoedit for better security ^[archive]. This is an example and other tools could also achieve the same goal. If this example does not work for you or if you are not using Whonix, please refer to this link.

sudoedit /etc/default/grub.d/50_user.cfg

sudoedit /etc/default/grub.d/50_user.cfg

3. Paste.

Notes:

• The following example uses kernel parameter nomodeset.
• You need to replace nomodeset with the actual kernel parameter you want to add.
• Don't remove the leading text.
  • Visual elaboration: Marked with underline GRUB_CMDLINE_LINUX="$GRUB_CMDLINE_LINUX nomodeset". Do not remove underlined part.
• Don't remove the trailing quote (")
  • Visual elaboration: Marked with bold: GRUB_CMDLINE_LINUX="$GRUB_CMDLINE_LINUX nomodeset". Do not remove bold part.
• Replace only nomodeset with the actual kernel parameter you want to add.

GRUB_CMDLINE_LINUX="$GRUB_CMDLINE_LINUX nomodeset"

GRUB_CMDLINE_LINUX="$GRUB_CMDLINE_LINUX nomodeset"

4. Save.

5. Regenerate grub configuration.

sudo update-grub

sudo update-grub

The process is complete.

See Also

• Configuration Files

Footnotes

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