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If the ESP isn't mounted it's possible that the update may look succesful on the Linux side, but certain to fail later. |
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| .. | ||
| fu-plugin-uefi.c | ||
| meson.build | ||
| README.md | ||
| uefi.conf | ||
UEFI Support
Introduction
The Unified Extensible Firmware Interface (UEFI) is a specification that defines the software interface between an OS and platform firmware. With the UpdateCapsule boot service it can be used to update system firmware.
Build Requirements
For UEFI capsule support, you need to install fwupdate 0.5 or later.
- source: https://github.com/rhinstaller/fwupdate
- rpms: https://pjones.fedorapeople.org/fwupdate/
- debs (Debian): https://tracker.debian.org/pkg/fwupdate
- debs (Ubuntu): https://launchpad.net/ubuntu/+source/fwupdate
If you don't want or need this functionality you can use the
--disable-uefi option.
UEFI Unlock Support
On some Dell systems it is possible to turn on and off UEFI capsule support from within the BIOS. This functionality can also be adjusted from within the OS by fwupd. This requires using fwupdate 5 or later and compiling it with libsmbios support.
When fwupd and fwupdate have been compiled with this support you will
be able to enable UEFI support on the device by using the unlock command.
Custom EFI System Partition location
fwupdate 10 and later allow using an EFI system partition location
at runtime that is different than the location compiled into the library.
fwupd 1.0.6 and later can take advantage of this feature by allowing
users to modify /etc/fwupd/uefi.conf.
An option titled OverrideESPMountPoint is available that can be uncommented and set to any valid directory on the system.
Setting an invalid directory will disable the fwupd plugin.