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Step number 2 is especially helpful:

2. Choose your language settings, and then click "Next."

Unix had a funny "not a typewriter" error message that eventually ended up in an Apple OS: http://support.apple.com/kb/TA31349

I think it will be hard to remove ENOTTY. It is documented differently now, but as you can see, the error message is still there.

I've also had an error message along the lines of "cannot read from tape" when using tar(1) in OS X.

Well, tar is the Tape ARchiver, so that makes more sense. It just happens that everything is a file in unix, whether it's a file or a tape driver.