fdwrite(1) on FreeBSD
The text 19f6168d4ba4, as FreeBSD 15.0-RELEASE, FreeBSD 14.5-RELEASE, FreeBSD 14.4-RELEASE, FreeBSD 14.3-RELEASE, FreeBSD 14.2-RELEASE, FreeBSD 14.1-RELEASE, FreeBSD 14.0-RELEASE shipped it.
format and write floppy disks
Flags it lists
-
-d -
-f -
-v -
-y