Partition a USB Drive
In this video, I demonstrate how to create a partition on your USB drive on your Mac. This same process is done when formatting your hard drive. You can also do this on a PC by using Disk Management.
Step One
Add a USB drive to the USB port on your Mac.
Step Two
Open the app called "Disk Utility."
Step Three
Select the USB drive on the bottom left side of the menu pane. Note: Select the drop down menu at the top left (next to "Disk Utility") and select "show all devices."
Step Four
Select "erase" at the top left to format the disk (make sure there are no files on the drive or you will lose them).
Step Five
Select "Format" and then "Mac OS Extended Journaled." Under "Scheme" select GUID Partition Map.
Step Six
Select "Partition" at the top menu bar. Select the (+) symbol beneath the pie chart to add another partition. Note: One partition comes with drives by default. Use the Pie Chart to select how much space you want to dedicate to the partition.
Step Seven
Select "Apply." On the left menu bar, you wil notice that you USB drive now has two partitions.
Caution: You must make sure to select the USB drive and not your hard drive by mistake or you risk losing the files you have on your computer's hard drive.