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I would like to add a command-line option, such as --default-console=none, to upstart.

I believe I can just add these to the kernel invocation line and they will be passed on, is this true? If so, how do I do this so that it will be used when grub.cfg is auto-updated because of a kernel upgrade?

If not, how do I add options directly to upstart?

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Edit /etc/default/grub and add --default-console=none to the GRUB_CMDLINE_LINUX_DEFAULT line.

So the GRUB_CMDLINE_LINUX_DEFAULT line should look something like this:

GRUB_CMDLINE_LINUX_DEFAULT="... --default-console=none"

Then run the following to regenerate your grub.cfg:

sudo grub-mkconfig -o /boot/grub/grub.cfg

If you need to rollback, for any reason, removing the --default-console=none from /etc/default/grub and then running grub-mkconfig -o /boot/grub/grub.cfg as root should be enough to take you back to how your Grub was before you made the changes.

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