Disk Utility in Mac OS X facilitates performing several disk management tasks including partitioning a hard drive into several volumes, managing existing volumes, verify and check disk as well as the disk permissions etc. A beginner may not find himself to be able to work with Disk Utility, though. Therefore, it is recommended to use Mac partitioning software to repartition a Mac hard drive.
“I want to partition my newly purchased external WD 1TB hard drive so that I can store my data in different volumes. How can I do it?”
The scenario mentioned above demands an easy and efficient way to partition an external hard drive into several volumes so that different types of data can be stored separately. Let us go through a few simple steps involved in the process.
- Attach the source hard drive to a running Mac machine.
- Go to Disk Utility (Click Go on the task bar and select Applications in the context menu. Enter Utilities folder and open Disk Utility.)
- Select source drive in the left pane of the Disk Utility window (You should see it with the size and the manufacturer’s name if not changed earlier.)
- Now, go to the Partition tab in the right pane.
- Under ‘Volume Scheme’ dropdown list, select the number of partitions to be created. E.g. Select ‘3 Partitions’ if three partitions are to create.
- Click on the ‘Options’ button below the hard drive structure and choose a ‘Partition Map Scheme’ for the hard drive.
It is recommended to choose ‘GUID Partition Table’ to make it resizable on an Intel-based Mac machine. Alternatively, choose Apple Partition Map on a PowerPC based Mac machine to make the partition as the boot drive. Click OK.
- Select a partition in the hard drive structure and specify a ‘Name’, ‘Format’, and ‘Size’ for this, under ‘Volume Information’ area.
It is recommended to select Mac OS Extended (Journaled) in the ‘Format’ dropdown list to make it boot enabled. You can also resize a volume by clicking and holding its boundary (Drag upward to reduce the size and downward to enlarge.)
- Once you are done, click Apply button to save the changes.
If you find partitioning a Mac drive is hard using Disk Utility, you can use a professional Mac partitioning software to do the same. Download a partition assisting software from the Internet and install it on the Mac machine. Make sure the drive does not contain any type of essential data; however, it is recommended to backup everything.