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wiki / boot / efivarfs                                            Edit this page

Edited (7bbdc4e) at 2020-06-14 by Dylan Araps


EFIVARFS [0]
________________________________________________________________________________

To use efibootmgr and other software to manipulate the UEFI boot entries, the
efivars filesystem must be mounted. This isn't handled automatically by KISS due
to the security implications in doing so. [1]

+------------------------------------------------------------------------------+
| Mount efivars.                                                               |
+------------------------------------------------------------------------------+
|                                                                              |
|   $ mount -t efivarfs none /sys/firmware/efi/efivars/                        |
|                                                                              |
+------------------------------------------------------------------------------+
| Unmount efivars.                                                             |
+------------------------------------------------------------------------------+
|                                                                              |
|   $ umount /sys/firmware/efi/efivars/                                        |
|                                                                              |
+------------------------------------------------------------------------------+


References
________________________________________________________________________________

[0] https://www.kernel.org/doc/Documentation/filesystems/efivarfs.txt
[1] https://github.com/systemd/systemd/issues/2402


________________________________________________________________________________

Dylan Araps (C) 2019-2020

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other countries.