ironic/releasenotes/notes/uefi-is-now-the-default-562...

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---
features:
- |
The default deployment boot mode is *now* UEFI. Legacy BIOS is still
supported, however operators who require BIOS nodes will need to
set their nodes, or deployment, appropriately.
upgrade:
- |
The default boot mode has been changed and now UEFI. Operators who
were explicitly relying upon BIOS based deployments in the past,
may wish to consider setting an explicit node level override for
the node to only utilize BIOS mode. This can be configured at a
conductor level with the ``[deploy]default_boot_mode``. Options
to set this at a node level can be found in the
`Ironic Installation guide - Advanced features <https://docs.openstack.org/ironic/latest/install/advanced.html#boot-mode-support>`_
documentation.