Partition and Format a Drive in OS X
Partitioning and formatting drives in OS X is much different than it is in Windows, even though the concepts are similar. Apple’s Disk Utility application ships with OS X, and it is simple yet powerful. It gives you a great deal of control over your disks.
Partitioning a Disk
1. Connect your drive to the Mac. If you have an internal hard drive, follow Apple’s instructions for installing it in your machine. If you have an external USB or FireWire hard drive, plug the drive into a port and power it up.
If you are using a Flash drive, simply plug it into the USB port. If the drive is already formatted, OS X will mount it, and it will appear on the Desktop. If OS X cannot read the drive’s format (or if it is not formatted), OS X will prompt you to partition and format it.
2. Launch the Disk Utility application if it has not already launched.
3. Choose the disk you wish to partition from the list in the left pane, and then click on the Partition button. The current partition information, if there is any, will appear in the right pane of the window.
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