The file /boot/boot.conf existed for the 3.0 release (r38764). It was

replaced by /boot/loader.rc for 3.1 (r42682). In May 2000, this was
documented as deprecated (r61942) (between FreeBSD 4.0 and
4.1). Remove it since it's not been the preferred method in 17 years
and has been deprecated for 16.

Differential Revision: https://reviews.freebsd.org/D8142

sys/boot/common/interp.c

@@ -104,8 +104,7 @@ interact(const char *rc)
 
     if (rc == NULL) {
 	/* Read our default configuration. */
-	if (include("/boot/loader.rc") != CMD_OK)
-	    include("/boot/boot.conf");
+	include("/boot/loader.rc");
     } else if (*rc != '\0')
 	include(rc);
 

sys/boot/common/loader.8

@@ -90,9 +90,7 @@ which is
 default.
 After that,
 .Pa /boot/loader.rc
-is processed if available, and, failing that,
-.Pa /boot/boot.conf
-is read for historical reasons.
+is processed if available.
 These files are processed through the
 .Ic include
 command, which reads all of them into memory before processing them,
@@ -957,10 +955,6 @@ itself.
 Additional
 .Tn FICL
 initialization.
-.It Pa /boot/boot.conf
-.Nm
-bootstrapping script.
-Deprecated.
 .It Pa /boot/defaults/loader.conf
 .It Pa /boot/loader.conf
 .It Pa /boot/loader.conf.local