boot.config man page on FreeBSD

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

NAME
     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 con‐
     figuration 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.

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.

FILES
     /boot.config  parameters for the boot blocks (optional)

SEE ALSO
     boot(8), loader(8)

AUTHORS
     This manual page was written by Daniel Gerzo ⟨danger@FreeBSD.org⟩.

BSD				 May 13, 2007				   BSD
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