January 30, 2023
Partition a Hard Drive Using Mac OS X Disk Utility

Partition a Hard Drive Using Mac OS X Disk Utility

Posted May 9, 2008 at 1:10pm by iClarified · 65687 views
These are instructions on how to partition a hard drive using Mac OS X Disk Utility.

Step One
If your hard drive is an external drive, connect it to the computer. Launch Disk Utility from the Applications:Utilities folder.
Partition a Hard Drive Using Mac OS X Disk Utility

Partition a Hard Drive Using Mac OS X Disk Utility

Step Two
From the list on the left select the drive you would like to format
Partition a Hard Drive Using Mac OS X Disk Utility

Step Three
Click to select the Partition tab.
Partition a Hard Drive Using Mac OS X Disk Utility

Step Four
From the Volume Scheme dropdown select the number of partitions you would like to create on the drive.
Partition a Hard Drive Using Mac OS X Disk Utility

Step Five
Select a Partition (ie Untitled 1) then give it a Name, Format, and Size.
Partition a Hard Drive Using Mac OS X Disk Utility

Step Six
You can also drag the handle between the partition boxes to resize the partitions.
Partition a Hard Drive Using Mac OS X Disk Utility

Step Seven
Select the remaining partitions and enter their Volume Information.
Partition a Hard Drive Using Mac OS X Disk Utility

Step Eight
Note you can use the Plus and Minus buttons to add or remove partitions.
Partition a Hard Drive Using Mac OS X Disk Utility

Step Nine
Press the Options... button to choose a partition scheme for the hard disk.
Partition a Hard Drive Using Mac OS X Disk Utility

To use the disk to start up an Intel Mac select GUID Partition Table. To use the hard disk to start up a PowerPC Mac select Apple Partition Map. To use the disk to start up a Windows computer select Master Boot Record. Press the OK button to set this option.
Partition a Hard Drive Using Mac OS X Disk Utility

Step Ten
Press the Apply button to begin partitioning.
Partition a Hard Drive Using Mac OS X Disk Utility

Step Eleven
A window will popup asking you to confirm the partitioning. Please note this will permanently erase all data from the disk. Click the Partition button to continue.
Partition a Hard Drive Using Mac OS X Disk Utility

Step Twelve
Notice the status bar shows the progress of the partitioning.
Partition a Hard Drive Using Mac OS X Disk Utility

Step Thirteen
Once the partitioning is complete Disk Utility will update and show the new volume information for your hard disk!
Partition a Hard Drive Using Mac OS X Disk Utility
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