How to Unpartition a Hard Drive Mac

Alicia Santos

Mac, Tutorials

Are you looking to unpartition a hard drive on your Mac? Unpartitioning a hard drive can be useful in various scenarios, such as when you want to merge multiple partitions into one, reclaim space from an unused partition, or simply reorganize your storage. In this tutorial, we will guide you through the steps to unpartition a hard drive on your Mac.

Before You Begin

Before diving into the unpartitioning process, it is important to backup any important data that may be stored on the partitions you intend to remove. Unpartitioning a hard drive will erase all data contained within the partition, so ensure that you have a copy of any files you wish to keep.

Step 1: Open Disk Utility

To begin unpartitioning your hard drive, open Disk Utility. You can access Disk Utility by following these steps:

  • Click on the Finder icon in the Dock (the smiling face).
  • Select Applications.
  • Open the Utilities folder.
  • Double-click on Disk Utility.

Step 2: Select the Hard Drive and View Partition Layout

In Disk Utility, you will see a list of drives and partitions on the left-hand side. Locate and select the hard drive that contains the partition(s) you wish to remove.

The selected hard drive’s information will appear in the main window of Disk Utility. Here, click on the “Partition” tab to view and manage existing partitions.

Step 3: Remove Partitions

Now that you have accessed the partition layout, you can proceed to remove the unwanted partitions. To do this, follow these steps:

  1. Select the partition(s) you want to remove.
  2. Click on the “-” (minus) button located at the bottom of the Disk Utility window.
  3. Confirm your actions when prompted. Note that all data within the selected partition(s) will be erased.

Step 4: Apply Changes and Unpartition

After removing the desired partitions, you need to apply the changes for them to take effect. Follow these final steps:

  1. Click on the “Apply” button in the bottom right corner of Disk Utility.
  2. Wait for Disk Utility to complete the unpartitioning process. This may take a few moments.


You have successfully unpartitioned a hard drive on your Mac. The removed partitions are now merged back into a single volume, and any space they occupied is reclaimed. You can verify this by checking your hard drive’s information in Disk Utility or using other file management tools.

Note that unpartitioning a hard drive will erase all data within the removed partitions. If you have any important files stored there, make sure to back them up beforehand.

We hope this tutorial has been helpful in guiding you through the process of unpartitioning a hard drive on your Mac. Enjoy your newly organized and consolidated storage!

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