writing to HFS formatted Floppy disks? you'll need to use OSX 10.5.x or earlier

[chrisNova777]

HFS is the file system for the floppy + hard drives for vintage macintosh computers

https://en.wikipedia.org/wiki/HFS_Plus
it was revised to a more modern version, renamed to HFS+ in 1998.
so basically these are the floppy disk filesystem formats
HFS (vintage) vs HFS+ (modern) prior to 1998 and after 1998.

ok this article claims that snow leopard broke compatibility with using HFS formatted floppy discs with OSX via a USB-connected-Floppy Drive; why is this important? its not - to most people - its important to people using vintage macs running System 7 software and using floppy discs to move data back + forth between Vintage + Modern Macs, HFS+ as a filesystem format option for floppies that didnt exist untill the release of MacOS8.1, priomuch like how ExFAT didnt exist in the early 2000s.

https://lowendmac.com/2016/floppy-disk-compatibility-and-incompatibility-in-the-mac-world/

HFS Floppies: Fully Readable, No Writes with OS X 10.6 or Later
The good news is that all tested versions of Mac OS X are able to read 1.4 MB floppy disks in a USB floppy drive. The bad news – well, at least less good – is that starting with Mac OS X 10.6 Snow Leopard, you can’t write to an HFS-formatted floppy disk. To do that, you need to use OS X 10.5 Leopard or earlier.

HFS+ Floppies: Full Compatible with All Versions of Mac OS X
Under OS X 10.6 or earlier, the default format when formatting a floppy disk is HFS, but earlier versions (at least back to 10.4 Tiger) let you choose HFS+ as your disk format.

How to Format a Disk to HFS Without a Mac
https://smallbusiness.chron.com/format-disk-hfs-mac-49229.html

[chrisNova777]

 
as seen from tiger osx on a powermac g5 with a usb teac fd-05 connected and 1.44mb floppy inserted