boot0cfg(8) on FreeBSD
The text 1a5609834855, as FreeBSD 4.7-RELEASE, FreeBSD 4.6.2-RELEASE, FreeBSD 4.6-RELEASE shipped it.
boot manager installation/configuration utility
Flags it lists
-
-B -
-b -
-d -
-f -
-m -
-o -
-s -
-t -
-v