Select "Utilities" and "Terminal" to launch the command console and attempt to format troublesome hard drives that can't be formatted within Mac OS X.

Terminal in Mac OS provides much more efficiency and more access to the system level and even uses very few resources. Many useful macOS terminal commands consume less than 0.1% of system resources.

If you’re an advanced user of Mac OS X, it’s very likely that you know what Terminal.app is. If you’re not, the Terminal is an application included in every version of OS X into the Utilities folder ...

Terminal brings the command line back to your Mac. Here's how to use it to customise and troubleshoot your Mac, and the most commonly used Terminal commands ...

If you are starting to experiment with the OS X Terminal, you'll want to know what commands are available. Here are some ways to explore your options.

To help manage all these Terminal hacks GitHub user Mathias Bynens created a list of the 65 best Terminal commands. Terminal is one of the easiest ways to disable (or enable) hidden features on a Mac.