|
NAME | SYNOPSIS | DESCRIPTION | OPTIONS | EXAMPLE | SEE ALSO | NOTES | COLOPHON |
LOADER.CONF(5) loader.conf LOADER.CONF(5)
loader.conf - Configuration file for systemd-boot
ESP/loader/loader.conf, ESP/loader/entries/*.conf
systemd-boot(7) will read ESP/loader/loader.conf and any files with
the ".conf" extension under ESP/loader/entries/ on the EFI system
partition (ESP).
Each configuration file must consist of an option name, followed by
whitespace, and the option value. "#" may be used to start a comment
line. Empty and comment lines are ignored.
Boolean arguments may be written as "yes"/"y"/"true"/"1" or
"no"/"n"/"false"/"0".
The following configuration options in loader.conf are understood:
default
A glob pattern to select the default entry. The default entry may
be changed in the boot menu itself, in which case the name of the
selected entry will be stored as an EFI variable, overriding this
option.
timeout
How long the boot menu should be shown before the default entry
is booted, in seconds. This may be changed in the boot menu
itself and will be stored as an EFI variable in that case,
overriding this option.
If the timeout is disabled, the default entry will be booted
immediately. The menu can be shown by pressing and holding a key
before systemd-boot is launched.
console-mode
This option configures the resolution of the console. Takes a
number or one of the special values listed below. The following
values may be used:
0
Standard UEFI 80x25 mode
1
80x50 mode, not supported by all devices
2
the first non-standard mode provided by the device firmware,
if any
auto
Pick a suitable mode automatically using heuristics
max
Pick the highest-numbered available mode
keep
Keep the mode selected by firmware (the default)
editor
Takes a boolean argument. Enable (the default) or disable the
editor. The editor should be disabled if the machine can be
accessed by unauthorized persons.
auto-entries
Takes a boolean argument. Enable (the default) or disable entries
for other boot entries found on the boot partition. In
particular, this may be useful when loader entries are created to
show replacement descriptions for those entries.
auto-firmware
Takes a boolean argument. Enable (the default) or disable the
"Reboot into firmware" entry.
random-seed-mode
Takes one of "off", "with-system-token" and "always". If "off" no
random seed data is read off the ESP, nor passed to the OS. If
"with-system-token" (the default) systemd-boot will read a random
seed from the ESP (from the file /loader/random-seed) only if the
LoaderSystemToken EFI variable is set, and then derive the random
seed to pass to the OS from the combination. If "always" the boot
loader will do so even if LoaderSystemToken is not set. This mode
is useful in environments where protection against OS image reuse
is not a concern, and the random seed shall be used even with no
further setup in place. Use bootctl random-seed to initialize
both the random seed file in the ESP and the system token EFI
variable.
See Random Seeds[1] for further information.
# /boot/efi/loader/loader.conf
timeout 0
default 01234567890abcdef1234567890abdf0-*
editor no
The menu will not be shown by default (the menu can still be shown by
pressing and holding a key during boot). One of the entries with
files with a name starting with "01234567890abcdef1234567890abdf0-"
will be selected by default. If more than one entry matches, the one
with the highest priority will be selected (generally the one with
the highest version number). The editor will be disabled, so it is
not possible to alter the kernel command line.
systemd-boot(7), bootctl(1)
1. Random Seeds
https://systemd.io/RANDOM_SEEDS
This page is part of the systemd (systemd system and service manager)
project. Information about the project can be found at
⟨http://www.freedesktop.org/wiki/Software/systemd⟩. If you have a bug
report for this manual page, see
⟨http://www.freedesktop.org/wiki/Software/systemd/#bugreports⟩. This
page was obtained from the project's upstream Git repository
⟨https://github.com/systemd/systemd.git⟩ on 2020-08-13. (At that
time, the date of the most recent commit that was found in the repos‐
itory was 2020-08-11.) If you discover any rendering problems in
this HTML version of the page, or you believe there is a better or
more up-to-date source for the page, or you have corrections or
improvements to the information in this COLOPHON (which is not part
of the original manual page), send a mail to man-pages@man7.org
systemd 246 LOADER.CONF(5)
Pages that refer to this page: 30-systemd-environment-d-generator(7) , sd-boot(7) , systemd-boot(7) , systemd.directives(7) , systemd.index(7)