Paul, I should have been clear. I am tinkering. I was simulating a problem with the master database being off-line. I stopped SQL Server and tried starting up SSMS in single user mode.
I wanted to get into SSMS but found I couldn't, but this went against expectation because everywhere it says I can start SSMS at this point.
I am just trying to understand whether I am able to get into the GUI after successfully executing sqlservr.exe -m.
Thanks and I'll take a look at the book.