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The general parsing rules are:
All settings have the following format:
Unless it belongs to one of the classes of settings that receive special treatment, a setting will set the value of a loader(8) environment variable. The settings that receive special treatment are listed below. Settings beginning with "*" below define the modules to be loaded and may have any prefix; the prefix identifies a module. All such settings sharing a common prefix refer to the same module.
|exec||Immediately executes a loader(8) command. This type of setting cannot be processed by programs other than loader(8), so its use should be avoided. Multiple instances of it will be processed independently.|
|Defines additional configuration files to be processed right after the present file.|
|Name of the kernel to be loaded. If no kernel name is set, no additional modules will be loaded. The name must be a subdirectory of /boot that contains a kernel.|
|Flags to be passed to the kernel.|
Specify the root partition to mount.
loader(8) automatically calculates the value of this tunable from /etc/fstab from the partition the kernel was loaded from. The calculated value might be calculated incorrectly when /etc/fstab is not available during loader(8) startup (as during diskless booting from NFS), or if a different device is desired by the user. The preferred value can be set in /loader.conf.
The value can also be overridden from the loader(8) command line. This is useful for system recovery when /etc/fstab is damaged, lost, or read from the wrong partition.
|Protect boot menu with a password without interrupting autoboot process. The password should be in clear text format. If a password is set, boot menu will not appear until any key is pressed during countdown period specified by autoboot_delay variable or autoboot process fails. In both cases user should provide specified password to be able to access boot menu.|
|Provides a password to be required by check-password before execution is allowed to continue. The password should be in clear text format. If a password is set, the user must provide specified password to boot.|
|If set to "YES", module names will be displayed as they are loaded.|
|If set to "YES", that module will be loaded. If no name is defined (see below), the module's name is taken to be the same as the prefix.|
|Defines the name of the module.|
|Defines the module's type. If none is given, it defaults to a kld module.|
|Flags and parameters to be passed to the module.|
|Commands to be executed before the module is loaded. Use of this setting should be avoided.|
|Commands to be executed after the module is loaded. Use of this setting should be avoided.|
|Commands to be executed if the loading of a module fails. Except for the special value "abort", which aborts the bootstrap process, use of this setting should be avoided.|
WARNING: developers should never use these suffixes for any kernel environment variables (tunables) or conflicts will result.
|("NO") If set to "YES", a bitmap will be loaded to be displayed on screen while booting.|
|(" /boot/splash.bmp") Name of the bitmap to be loaded. Any other name can be used.|
|"( 9600" or the value of the BOOT_COMCONSOLE_SPEED variable when loader(8) was compiled). Sets the speed of the serial console. If the previous boot loader stage specified that a serial console is in use then the default speed is determined from the current serial port speed setting.|
|("vidconsole") "comconsole" selects serial console, "vidconsole" selects the video console, "nullconsole" selects a mute console (useful for systems with neither a video console nor a serial port), and "spinconsole" selects the video console which prevents any input and hides all output replacing it with "spinning" character (useful for embedded products and such).|
|("kernel kernel.old") Space or comma separated list of kernels to present in the boot menu.|
|(" /boot/loader.conf /boot/loader.conf.local")|
|("NO") If set to "YES", will load the splash screen module, making it possible to display a bmp image on the screen while booting.|
|("NO") If set to "YES", will load the splash screen module, making it possible to display a pcx image on the screen while booting.|
|("NO") If set to "YES", the vesa module will be loaded, enabling bitmaps above VGA resolution to be displayed.|
|If set to "YES", the beastie boot menu will be skipped.|
|Selects a desired logo in the beastie boot menu. Possible values are: "orbbw", "orb", "fbsdbw", "beastiebw", "beastie", and "none".|
|If set to "NO", the beastie boot menu will be displayed without ANSI coloring.|
|("YES") If set to "NO", the very early boot-time entropy file will not be loaded. See the entropy entries in rc.conf(5).|
|("/boot/entropy") The name of the very early boot-time entropy cache file.|
|Specifies a comma-delimited list of FDT overlays to apply. /boot/dtb/overlays is created by default for overlays to be placed in.|
|If set to "YES", attempt to auto-detect kernels installed in /boot. This is an option specific to the Lua-based loader. It is not available in the default Forth-based loader.|
|default settings -- do not change this file.|
|/boot/loader.conf||user defined settings.|
|/boot/loader.conf.local||machine-specific settings for sites with a common loader.conf.|
|LOADER.CONF (5)||March 19, 2018|
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Please direct any comments about this manual page service to Ben Bullock.