boot_i386(8) on FreeBSD
The text 9078e98cbd31, as FreeBSD 4.5-RELEASE shipped it.
system bootstrapping procedures
Flags it lists
-
-C -
-D -
-P -
-a -
-acCdDghPrsv -
-c -
-d -
-g -
-h -
-p -
-r -
-s -
-v