When booting a UNIX-like OS its sometime necessary to see messages that are printed to screen as the operating system loads. Sometimes you may just want to make sure that a service is starting up correctly but it really comes in handy when trying to troubleshoot a start up issue.

Apple has conveniently hidden these start up messages! BUT You can seeing them on screen by holding down the Command and “v” keys (Command-V) immediately after powering on your Mac.

SO what if you always want to see these messages every time you boot your Mac?

To always boot OSX in verbose mode you’ll need to fire up a terminal session and issue the following command:

sudo nvram boot-args="-v"

If after a period of time you grow tired of seeing these messages scroll across your screen, you can disable verbose booting by issuing the following command:

sudo nvram boot-args=