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59 lines
1.4 KiB
ReStructuredText
59 lines
1.4 KiB
ReStructuredText
.. _boot-options:
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############
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Boot Options
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############
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.. warning:: This function may be highly disruptive.
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It may cause major service interruption, so make sure you really
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need it and verify your input carefully.
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VyOS has several kernel command line options to modify the normal boot
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process.
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To add an option, select the desired image in GRUB menu at load
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time, press **e**, edit the first line, and press **Ctrl-x** to boot when
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ready.
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.. image:: /_static/images/boot-options.png
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:width: 80%
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:align: center
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Specify custom config file
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==========================
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Tells the system to use specified file instead of ``/config/config.boot``.
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If specified file does not exist or is not readable, fall back to
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default config. No additional verification is performed, so make sure
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you specify a valid config file.
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.. code-block:: none
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vyos-config=/path/to/file
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To load the *factory default* config, use:
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.. code-block:: none
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vyos-config=/opt/vyatta/etc/config.boot.default
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Disable specific boot process steps
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===================================
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These options disable some boot steps. Make sure you understand the
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:ref:`boot process <boot-steps>` well before using them!
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.. glossary::
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no-vyos-migrate
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Do not perform config migration.
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no-vyos-firewall
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Do not initialize default firewall chains, renders any firewall
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configuration unusable.
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