Partition For Mac Os

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Starting with OS X Tiger, both APM and GUID partitions can be used for accessing volumes, but PowerPC-based Macs can only boot from APM disks. While Intel-based Macs generally boot from a GUID Partition Table, they are all able to start the operating system from APM and Master Boot Record (MBR) using the BIOS-Emulation called EFI-CSM.

  1. Partition Manager For Mac Os
  2. Mac Os Partition Tool
  3. Partition Buffalo Linkstation Disk For Mac Os
  1. Resize Partition on Mac with Disk Utility. Mac Disk Utility is a powerful built-in application in Mac OS that has undergone a series of changes with every major OS update. Many Mac users have complained that using Mac Disk Utility to resize a Mac Volume is no longer easy.
  2. MiniTool Partition Wizard by MiniTool Solution Ltd. Is a free (for personal use) and very popular application that will help you create, edit, delete and manage disk partitions. However, MiniTool Partition Wizard for Mac has not been released yet, so if you need a partition manager for Mac.

In simple words, a disk partition can be defined as the Mac can be dividing into different partitions, and all the partitions have their specific space that you can use. You can also transfer the essential files and documents in one partition and lock it, and the other partition can be used for other general tasks.

If you want to manage your Mac hard drive by creating different partitions, then this article is the right place for you. It is a full guide of how to partition a hard drive on Mac. Let’s check it out.

Before Partitioning A Mac: Backup and Clean it Up First!

The very primary step before moving towards partition hard drive on Mac, you must backup and clean up the internal hard drive of Mac. First thing to do is to backup your files on Mac using Time Machine. If anything goes wrong in the partition process, you still have the backup files.

Then you need to clean up your Mac and prepare for disk partition, so if any other unwanted program that might become the reason for virus or interruption can easily remove. As for Mac cleaning, you can use the Mac cleaning tools to do that, but for effective results, use iMyFone Umate Mac Cleaner. This app is a great chioce for cleaning up your Mac before partitioning a hard drive, for it can do the cleaning task efficiently and thoroughly. The main cleaning features of it are as follow:

  • Clean Up Junk: It can easily clean up to 40+ types of junk files in one go with Quick Clean & Deep Clean mode.
  • Delete large files: It can quickly delete large files that over 50MB within one click.
  • Delete duplicate files: It can delete the duplicate files from your Mac without any problem to reclaim more available space.
  • Uninstall apps and remove extensions: It will allow you to uninstall unused apps and remove those unnecessary extensions in a flash.

The app is super easy to use that you can use it to get a cleaner Mac with simple clicks. Now, here are the steps to follow if you want to use this fantastic app for junk cleaning from your Mac.

  1. Download the app and launch it on your Mac.
  2. Then you need to choose a feature that you need, after that, click on the Scan button.
  3. Just preview and then select all the unneeded items to clean up, all can be done in a few minutes.
Click here to get the detailed guide to know this Mac cleaning tool better and use it completely clean up your Mac.

Here We Go! How to Partition A Hard Drive on Your Mac?

For disk partition, there are twp types: Volume and Partition. Before creating a new partition, you need to confirm your Mac's operating system. For different macOSs, there are different operations when it comes to disk partition. We will list several ways below to help you determine how you go about partitioning your Mac.

Mac disk utility partition

For macOS High Sierra & Later Versions: Create A Volume

A new word here, Volume, is a storage container that a Mac can read. It include CDs, DVDs, SSDs and hard drives. If you are running macOS High Sierra or later versions on your Mac, then you can create a new volume. The term ‘partition’ is used in those Macs running lower versions.

So, here is the question: how to create a volume on Macs that are running macOS High Sierra or later versions? These later macOSs use a new file system - Apple File System (APFS). For those Macs using the APFS, you can use Disk Utility in MacOS to create a new volume. Below are the steps to follow.

  1. Open Disk Utility on your Mac.
  2. Click the drop-down menu and choose 'Show All Devices' option. Then select the disk you want to add the new volume to and hit the '+' button to add a new volume.
  3. Next, name your new volume and set it up accordingly by clicking on 'Size' Option. Then fill in the 'Reserve Size' and 'Quota Size' options.
  4. At last, you must click on 'Add' button to confirm your request.

For macOS Sierra & Lower Versions: Create A Partition

As mantioned above, for Macs that are running lower verisons, you can partition its hard drive. There are two methods that can create a partition on Mac. One is using Disk Utility and the other is using Boot Camp. Just keep reading!

Method 1: Use Disk Utility to Partition A Hard Drive on Mac

The first way to do the disk partition on Mac is to use Disk Utility, which can repair and partition disk drive spaces from your Mac. Next, let's follow the procedure of Mac disk utility partition:

  1. Open Disk Utility application on your Mac.
  2. Next, you need to choose Mac's internal hard drive.
  3. Then click Partition option and click the add partition button: '+'.
  4. Now a new partition will show up, and you can change the size as indicated by what you need. Then give this new partition a name as you like.
  5. At last, you must click on 'Apply' button to confirm your request.
  6. You can also click on 'Revert' button to remove the partition on Mac.

When the process is done, you will have a new hard drive with available space. Just transfer anything you want and keep them in the new partition.

Method 2: Use Boot Camp to Partition A Hard Drive on Mac

As we mentioned above, you can run different operating systems on your Mac after partitioning a hard drive. So if you want to run Windows on another drive, this way is very helpful to get it done. Boot Camp is a pre-installed application in the later version of Mac. You can launch it and follow the steps below.

  1. Open Application > Utilities > Boot Camp Assistant.
  2. Click on “Create or remove a Windows partition” option and hit “Continue” button.
  3. Then select a hard drive on your Mac for disk partition.
  4. Next, confirm the size of the partition for running Windows OS.
  5. At last, hit the Partition button and that is done.

Extra Tip: How to Resize or Delete Your Partition?

After talking about how to partition hard drive on Mac, we will guide you more extra tips in the next part. Let's check them out!

To Resize A Partition: Click on the 'Partition' option in Disk Utility and click the '+' or '-' button to change the size of your partition.

To Delete A Partition: Click on the 'Partition' tab in Disk Utility, then click the '-' sign and hit 'Remove' option to delete a partition.

What Are The Benefits and Risks of Partitioning A Mac?


Here are some of the benefits and risks of partitioning a hard drive on Mac that you must consider before going to do that. Let’s check them out:

Benefits of Partitioning A Mac:

1. You can run more operating system

The main benefit that the Mac partition provides to you is, it will allow you to run two operating systems smoothly. You can also use the two different versions of one OS that means you can run on the two different partitions of the same device.

2. You can manage and format hard drive separately

The disk partition on Mac os x can allow you to manage both partitions in different ways. If you want to use another volume of the mac, it will require double space so, make a wise decision and select the right option according to the available space.

3. It will give you a private space

And you can enjoy the separated space for your essential documents, and the other partition can be used for general tasking. In this way, your essential data will be safe and sound, and no one can use it. The separate partition will allow you to use the Mac without any disturbance.

Risks of Partitioning A Mac:

When you partition your hard drive on Mac, a main risk of that is data loss. Actully you can avoid this by backing up your disk before partitioning your Mac. But if you forgot to backup your disk and lost some files after partitioning, don't worry. You can use Mac Data Recovery Tool to recover all the lost data on your Mac.


Partition For Mac Os

That's all on how to partition a Mac. You can easily follow the steps we listed above to do the disk partition by yourself. And remember to clean up your Mac before making a partition, the best choice for cleaning junk file on your Mac is to use Umate Mac Cleaner. Get started now! First, clean up your Mac and then create a partition on it.

Disk Utility User Guide

Partitioning a disk divides it into individual sections, each of which acts as a separate volume.

However, with APFS, you shouldn’t partition your disk in most cases. Instead, create multiple APFS volumes within a single partition. With the flexible space management provided by APFS, you can even install another version of macOS on an APFS volume.

Important: If you’re partitioning your internal physical disk because you want to install Windows, use Boot Camp Assistant instead. Do not use Disk Utility to remove a partition that was created using Boot Camp Assistant. Instead, use Boot Camp Assistant to remove the partition from your Mac.

Add a partition

Important: As a precaution, it’s best to back up your data before creating new partitions on your device.

  1. In the Disk Utility app on your Mac, select a volume in the sidebar, click the Partition button , then click Partition.

    Internal storage devices appear below the Internal section in the sidebar. External devices appear below the External section in the sidebar.

    When you select a volume that already has data on it, the pie chart shows a shaded area representing the amount of data on the volume and an unshaded area representing the amount of free space available for another volume. Disk Utility also shows whether the volume can be removed or resized.

    Note: If you see a small volume with an asterisk, the partition is smaller than can be represented at the correct scale in the chart.

  2. Click the Add button .

  3. Type a name for the volume in the Name field.

    For MS-DOS (FAT) and ExFAT volumes, the maximum length for the volume name is 11 characters.

  4. Click the Format pop-up menu, then choose a file system format.

  5. Enter the size or drag the resize control to increase or decrease the size of the volume.

  6. Click Apply, click Partition, then click Continue.

    Click Show Details to view the step-by-step process of creating a new volume.

  7. After the volumes are created, click Done.

After you partition a storage device, an icon for each volume appears in both the Disk Utility sidebar and the Finder sidebar.

Delete a partition

WARNING: When you delete a volume or partition, all the data on it is erased. Be sure to back up your data before you begin.

  1. In the Disk Utility app on your Mac, select a volume in the sidebar, click the Partition button , then click Partition.

  2. In the pie chart, click the partition you want to delete, then click the Delete button .

    If the Delete button is dimmed, you can’t delete the selected partition.

  3. Click Apply, then click Partition.

  4. After the volume is deleted, click Done.

Erase a partition

  1. In the Disk Utility app on your Mac, select the volume you want to erase in the sidebar.

  2. Click the Erase button , then click Erase.

    If the Erase button is dimmed, you can’t erase the selected volume.

  3. After the volume is erased, click Done.

Enlarge a partition on a storage device

If you have multiple partitions on a device and one of them is running out of space, you may be able to enlarge it without losing any of the files on it.

To enlarge a volume, you must delete the volume that comes after it on the device, then move the end point of the volume you want to enlarge into the freed space. You can’t enlarge the last volume on a device.

Partition Manager For Mac Os

WARNING: When you delete a volume or partition, all the data on it is erased. Be sure to back up your data before you begin.

Mac Os Partition Tool

  1. In the Disk Utility app on your Mac, select a volume in the sidebar, then click the Partition button .

  2. In the pie chart, select the partition you want to delete, then click the Delete button .

  3. Click Apply.

    The partition is removed, reformatted, and all free space is assigned to the previous partition.

  4. Click Done.

Partition Buffalo Linkstation Disk For Mac Os

See alsoFile system formats available in Disk Utility on MacAdd, delete, or erase APFS volumes in Disk Utility on MacAbout Disk Utility on Mac