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boot.config(5) [freebsd man page]

BOOT.CONFIG(5)						      BSD File Formats Manual						    BOOT.CONFIG(5)

boot.config -- Configuration file for the boot blocks DESCRIPTION
The boot.config file contains options for the FreeBSD boot block code. When the FreeBSD boot loader runs, it searches the ``a'' slice of the boot partition for a boot.config file (as a result, slices which are missing an ``a'' partition require user intervention during the boot process). If the boot.config file is found, its contents are used as the default configuration options for the boot block code and are echoed to the system console. A valid format of this file is to put BIOS drive number, a controller type, a unit number, a partition, a kernel file name, and any other valid boot(8) option on a single line, as it is done at the ``boot:'' prompt. The options related to the boot image selection described below and all the other options available for boot.config are documented in detail in the boot(8) manual page. FILES
/boot.config parameters for the boot blocks (optional) EXAMPLES
The command: # echo "-P" > /boot.config will activate the serial console of FreeBSD. The command: # echo "1:ad(1,a)/boot/loader" > /boot.config will instruct the second stage of boot(8) on the first disk to boot with the third boot(8) stage from the second disk. The command: # echo "1:ad(1,a)/boot/loader -P" > /boot.config will do both of the above. SEE ALSO
boot(8), loader(8) AUTHORS
This manual page was written by Daniel Gerzo <>. BSD
May 13, 2007 BSD

Check Out this Related Man Page

BOOTCTL(1)                                                            bootctl                                                           BOOTCTL(1)

bootctl - Control the firmware and boot manager settings SYNOPSIS
bootctl [OPTIONS...] status bootctl [OPTIONS...] list bootctl [OPTIONS...] update bootctl [OPTIONS...] install bootctl [OPTIONS...] remove DESCRIPTION
bootctl checks, updates, installs or removes the boot loader from the current system. bootctl status checks and prints the currently installed versions of the boot loader binaries and all current EFI boot variables. bootctl list displays all configured boot loader entries. bootctl update updates all installed versions of systemd-boot, if the current version is newer than the version installed in the EFI system partition. This also includes the EFI default/fallback loader at /EFI/BOOT/BOOT*.EFI. A systemd-boot entry in the EFI boot variables is created if there is no current entry. The created entry will be added to the end of the boot order list. bootctl install installs systemd-boot into the EFI system partition. A copy of systemd-boot will be stored as the EFI default/fallback loader at /EFI/BOOT/BOOT*.EFI. A systemd-boot entry in the EFI boot variables is created and added to the top of the boot order list. bootctl remove removes all installed versions of systemd-boot from the EFI system partition, and removes systemd-boot from the EFI boot variables. If no command is passed, status is implied. OPTIONS
The following options are understood: -h, --help Print a short help text and exit. --version Print a short version string and exit. --path= Path to the EFI System Partition (ESP). If not specified, /efi, /boot, and /boot/efi are checked in turn. It is recommended to mount the ESP to /boot, if possible. -p, --print-path This option modifies the behaviour of status. Just print the path to the EFI System Partition (ESP) to standard output and exit. --no-variables Do not touch the EFI boot variables. EXIT STATUS
On success, 0 is returned, a non-zero failure code otherwise. SEE ALSO
Boot loader specification[1] systemd boot loader interface[2] NOTES
1. Boot loader specification 2. systemd boot loader interface systemd 237 BOOTCTL(1)

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