

When the window opens, you will be given the option to rename the drive.With the drive selected, click the "Erase" button at the top of the screen.The selected drive will appear in the right-hand pane with details about it, such as location, how it’s connected, and the partition map in use.Drives usually have names that refer to the drive manufacturer or an external enclosure manufacturer. Select the storage device that you wish to format from the left-hand pane.

The left-hand pane contains the drive(s) and any volumes associated with the drives in a hierarchical view.

This can be located by opening Finder and then selecting "Applications, then "Utilities." Then, select "Disk Utility." If the drive you're formatting contains any files you need to keep, be sure to back up the information before proceeding. Please note, formatting your drive will delete all of the data it contains. To do this, simply follow the steps below. If your USB storage drive is not being recognized by applications on your Mac, you may be able to fix this by reformatting the drive and ensuring the scheme is set as Master Boot Record (MBR).
