fdwrite(1) on FreeBSD
The text b6a32bdd2e45, as FreeBSD 4.6.2-RELEASE, FreeBSD 4.6-RELEASE, FreeBSD 4.5-RELEASE, FreeBSD 4.4-RELEASE shipped it.
format and write floppy disks
Flags it lists
-
-d -
-f -
-v -
-y