Document alternative between '16m' and '16M' for Mac dd command
In the dd command line on Mac, according to 55f65277, people complained about both ‘16m’ and ‘16M’.
Then we reintroduced ‘16m’ to make /dev/rdisk work in #8438 (closed).
Now people are complaining again about ‘16m’ in https://twitter.com/recifs/status/693909221008629765.
Maybe we should document an alternative: try ‘16m’ and if it doesn’t work try ‘16M’.
To be able to write this we need to know:
- Which version works on the newer version of Mac OS X. This should be the first to be documented.
- What happens on older versions of Mac OS X when the default version fails.
Feature Branch: doc/11040-mac-16m-vs-16M