boot0cfg(8) on FreeBSD
The text 15bd92e82d42, as FreeBSD 13.2-RELEASE, FreeBSD 13.1-RELEASE, FreeBSD 13.0-RELEASE shipped it.
boot manager installation/configuration utility
Flags it lists
-
-B -
-b -
-d -
-f -
-i -
-m -
-o -
-s -
-t -
-v