Document Enhancement 2.3.1.1. Writing an Image File to USB

[Rob Hulley]

https://www.freebsd.org/doc/handbook/bsdinstall-pre.html <https://www.freebsd.org/doc/handbook/bsdinstall-pre.html>

For OSX 

# dd if=FreeBSD-10.2-RELEASE-amd64-memstick.img of=/dev/da0 bs=1M conv=sync

Should read bs=1m or it will fail. (lower case m instead of upper case M)

It should be obvious from the error message but might help someone.

Kind regards

Rob Hulley