How to Delete Partition on Mac Completely [Detailed Guide]

March 03, 2022Ashley Mae

If you don't want to use the Windows partition or Mac system in other versions any more, you'd better delete partitions on Mac to make use of more space. Partitions can take too much hard-drive space, which will also slow down the processing speed. By reading further, you will learn how to delete the partition on Mac through 3 efficient methods.

Delete Partition On Mac

Part 1: Two Default Ways to Delete Partition on Mac

There are two default ways to delete a partition on Mac. But be reminded that doing so will delete the data stored in the partition. So, the first thing you need to do is back up your data to other partitions.

1. Remove Partition on Mac through Disk Utility

Step 1:
Click the Launchpad and enter the Disk Utility in the search bar to find it quickly. Once you click it, choose the partition you need to delete on the left part of the window, typically known as Macintosh HD.
Open Disk Utility On Mac
Step 2:
Click the Partition tab on the top part of the window, and a pie chart will be displayed. Select the partition you want to delete and click the (Minus) – button.
Disk Utility Delete Partition On Mac
Step 3:
Click the Apply button to save the changes. A confirmation window will appear with the list of everything you have done. Confirm it and start deleting the partition on Mac.

2. Delete Partition on Mac Through Terminal

You can also delete the partition on Mac through Terminal. Since it's relatively difficult, you can follow the steps below:

Step 1:
Open the Terminal tool on your Mac or search it using Finder. Input the command diskutil list to show you the HDD or SSD's partitions and volumes.
Step 2:
Check the partition you want to delete and its identifier. Enter the command diskutil erase Volume jhfs+ drive /dev/disk0s3. You might need to change the last part of the command depending on the partition's identifier.
Step 3:
Once hitting the Enter bar, the terminal will show a progress bar then you will see the Finished erase on disk0s3. Use the command diskutil list again and check the partition. If the partition's name reset, then you successfully deleted the partition on Mac.
Terminal Diskutil List Delete Partition Mac

Part 2: The Easiest Way to Delete Partition on Mac Completely

Even with two fantastic default methods to delete the partition on Mac, you can't say that they are easy to use. However, with Aiseesoft Mac Cleaner, you can clean duplicate photos in a few clicks. You don't have to worry about the uninstall residual, as the Mac Cleaner will delete the partition on Mac and remove the unwanted files completely.

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Step 1:
Download Aiseesoft Mac Cleaner on your device, then launch it. To start with the cleaning of unwanted files, check the system status of the Mac from its CPU, Memory, and Disk.
Select Uninstall 800
Step 2:
Go to the Cleaner section and click the Scan button to sort out all of your files and documents. Wait for the scanning to finish. After that, click the View button on the right part of the pane to review the scan results.
Scan View Apps Mac 800
Step 3:
A quick way to delete is on the left part of the pane. You can click the desired space you want to reclaim with the options of 100MB, 5MB to 100MB, etc, then hit the Clean button on the bottom part of the window to delete the partition on Mac.
Clean Success 800

Part 3. FAQs about Deleting Partition on Mac

1. What is a partition on Mac?

A Mac partition is a separate entity that appears in the operating system as a logical region of the Mac hard drive. It uses s particular portion of the physical hard-drive space. It segregates the Mac drive as a hierarchical structure with a disk level and a partition level in the Disk Utility tool.

2. What happens when you delete a partition on Mac?

Deleting a partition on Mac can effectively remove any data stored on it and free up some storage space. If you are not sure what files hold on a partition, do not absentmindedly delete it. Or it is better to back up all your data before doing the process of deleting a partition on Mac.

3. Is partition necessary on Mac?

It depends on your need. With a partition on Mac, you can switch between versions of OS X, repair disk problems, use boot camp, share the iPhoto library, and perfectly manage backups. And if you don't want to use it, you can directly delete the partition on Mac.


With the methods mentioned in this article, you can freely use them to delete a partition on your Mac device effectively. Just be careful as you might lose some essential files if you don't attentively check which partition you should delete and which to separate. However, you don't need to risk losing the files with Aiseesfot Mac Cleaner because it will safely scan and free up your storage space. Try the software now and experience the easier way to save up space on your Mac.

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