Partitioning a hard drive means you are splitting the hard drive space to two or more partitions. When you want to run two operating systems on your Mac then the partitioning helps to run both the operating systems in individual partition. Partition also helps to separate the Mac’s system files from the data stored in your system. When you have one hard disk space on your Mac OS X, you can easily partition it using Disk Utility tool. Let us discuss in detail how to partition Mac hard drive.


Partitioning the Mac’s Drive

To start partitioning the Mac you have to,

  • Go to the Finder from the dock.
  • Now open Applications.
  • Go to the Utilities folder.
  • Now open the Disk Utility.
  • You can see the list of hard drives on the left side of Disk Utility Window. Select the hard drive you want to partition.
  • Now click the Partition tab.

how to partition mac hard drive

  • Click on the + button to add a new partition.
  • Enter the name for the new partition.
  • Choose the file system type by default it is Mac OS Extended (Journaled).
  • You can change the size of the partition by dragging the slider bar in the partition map or you can also enter the size manually.
  • Click on Apply button to make the partition. It will take some time to create the partition.

Deleting the Partition

To delete a partition you have to go to,

  • Go to the Finder from the dock.
  • Open Applications.
  • Go to the Utilities folder.
  • Now open the Disk Utility.
  • Now click the Partition
  • Select the Partition you want to delete.
  • Click on the – button to delete the selected partition.
  • Click Apply to delete the partition. Deleting a partition means all the data in the drive will be deleted permanently.

Changing the Size of Partition

To change the size of a partition you have to go to,

how to partition mac hard drive

  • The Finder > Applications > Utilities Folder > Disk Utility.
  • Choose the Partition
  • Select a partition and enter the new size in GBs for the partition. ‘or’
  • Move the slider between the partitions to up and down to increase and decrease the size of a partition.