If anyone is curious, I found the answer. Per this thread:
https://github.com/dosfstools/dosfstools/issues/67
You have to use the -a option to disable alignment. There is discussion
in the thread of the addition of a warning to indicate to the user of
this unexpected behavior and how to resolve it.
On 1/15/21 11:28 AM, Karel Zak wrote:
On Fri, Jan 15, 2021 at 11:01:45AM -0500, Michael T. Kloos wrote:
"mkfs.vfat -F 12 -R 2 /dev/loop0" does not seem to honor the -R option.
For mkfs.vfat see https://github.com/dosfstools/dosfstools. It's not
maintained by util-linux project.
Karel
