• Stellar Partition Manager

Stellar Partition Manager

Efficiently manages partitions on Mac hard drives including the BOOT volume without causing data loss


Professional Mac volume manager that allows you to perform basic partitioning operations, such as creating, deleting, resizing, formatting, and hiding/revealing a partition.

  • A complete Mac Partition Manager utility
  • Creates new partition(s) on Mac hard drive
  • Resizes, formats, or deletes existing partitions
  • Resizes Mac partition by optimizing the free space
  • Resizes Boot Camp & NTFS partition with ease
  • Performs batch operations preventing the risk of data loss
  • Compatible with macOS Sierra 10.12, 10.11, 10.10, 10.9, 10.8, 10.7, 10.6
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Key Features

This partition manager Mac utility meticulously plans all partition operations to ensure data safety and also enables you to roll back any unwanted changes before committing the action. Some salient features of the utility are listed below

Create new Partition icon

Create new Partition

The software allows you to easily and safely create partitions of any type on your Mac hard drive. If there is scattered free space on the drive, the comprehensive utility shifts the existing partitions to make sufficient space for the new partition to be created.

Delete Partition icon

Delete Partition

Using the software, you can comfortably delete a partition on your drive to create more free space for other disk usage. It is advisable to backup all your important data before performing this task. For deleting the system partition, you require creating a bootable media using Stellar Partition Manager.

Resizes Boot Camp partitions & NTFS drives icon

Resizes Boot Camp partitions & NTFS drives

With this Mac partition manager software, you can easily resize the Boot Camp partition so that both Windows OS & Mac OS X have appropriate partition sizes. User can also connect their NTFS formatted PC drives and resize the partitions as per need.

Resize Mac Partition icon

Resize Mac Partition

The software effectively resizes Mac partitions on any drive by adjusting and reorganizing the free space and thus, making the operation secure and free from any risk of data loss

Format Partition icon

Format Partition

The software facilitates easy and quick formatting of partitions when you wish to completely wipe off all data present on a particular volume to remove any unwanted virus and other malicious programs from the drive.

Create Bootable Media icon

Create Bootable Media

Stellar Partition Manager enables you to create a bootable media that could be used to perform partitioning operations on the boot drive. You need to backup your important data before working on the boot drive. The bootable support for OS X 10.11.4 is added in the software.

Hide / Reveal Partition icon

Hide / Reveal Partition

You can anytime hide a partition to conceal your important information or make it inaccessible to any unauthorized person for safety reasons. You can easily unhide or mount this partition later by using the ‘Reveal’ option.

Roll back icon

Roll back

This unique feature allows you to undo your last selection that you made to perform an action, but later decided not to proceed further



  1. Launch Stellar Partition Manager
  2. Select your hard drive from the left panel
  3. Use partition-edge to decrease the partition size
  4. Click Add button from top-menu bar
  5. Enter Partition Name, Size, Type
  6. Click OK
  7. Resize your Mac partitions accordingly using partition-edge
  8. Click Play button to apply your changes

This will add another partition your Mac hard drive

  1. Launch Stellar Partition Manager
  2. Select your hard drive from the left panel
  3. Click Format button from top-menu bar
  4. Enter Partition Name, Size, Type
  5. Click OK
  6. Click Play button to save changes

This will format your Mac partition

  1. Launch Stellar Partition Manager
  2. Select your hard drive from the left panel
  3. Click Delete button from top-menu bar
  4. Click Play button to save changes

This will delete the partition from your drive


1. You need to create a bootable USB with Stellar Partition Manager to Format, Add, Delete or Resize partitions on a startup Mac hard disk drive.

2. No, need to create a bootable USB for managing non-booting partitions or partitioning external hard drives.


Stellar Partition Manager supports all the versions of Mac OS, from 10.6 and above. It also supports the latest macOS Sierra 10.12 and OS X El Capitan 10.11, 10.10, 10.9, 10.8, 10.7, 10.6.


The partition you are trying to resize may contain some bad sectors. In such case, the resizing operation fails. Another reason could be that the partition has some errors in the file system.


You have made this partition hidden using Stellar Partition Manager. When the software hides a partition, you cannot perform any operation on this partition using Disk Utility. To mount or unhide the partition, you need to reveal it using the software itself.


No, the software does not allow merging partitions


At times, it happens when Disk utility fails to resize any partition on Mac hard drive. It may be the Startup disk partition or any other logical partition that fails to resize via Disk Utility. In such cases, Stellar Partition Manager will help you resize the stubborn partition. This software will create the boot DMG & will start the Mac OS X in bootable environment. It then recognizes & collects free spaces on the Mac hard drive & easily let user to resize the partition to take the free spaces.

Please Note: Stellar Partition Manager recognizes &shows the free spaces on the Mac hard drive whereas Disk Utility doesn’t.


Yes, it’s easier to resize Mac partitions through Stellar Partition Manager software over Disk utility because of the following reasons:

  1. Mac partition manager UI is similar to the UI of older Disk Utility hence it is user friendlier as always
  2. Mac partition manager software collects all free spaces at one place i.e. free spaces is gathered below all the partitions. Hence resizing Mac partitions with the availability of free spaces is extremely simple. Unfortunately, Disk Utility doesn’t collect free spaces, rather it makes free spaces as unused spaces.
  3. When Disk utility fails to format some partition due to whatsoever reasons then this Mac partition manager tackles the situation smartly.
  4. It has support to shift or resize Mac and BootCamp partitions.


Boot Camp Resizing is the new feature of Stellar Partition Manager V3.0 and older version such as 2.5 and 2.0 don’t support Boot Camp resizing. It is recommended to register the latest version of Stellar Partition Manger i.e. V3.0 in order to resize Boot Camp partition.

Rating & Reviews


4.7 out of 5 stars


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User Comments

Madison Cathey


I prefer managing my hard drive with Stellar Partition Manager utility on OS X El Capitan since it's Disk Utility is a big time disappointment when resizing the hard drive.

Kcholy Whelchel  


Disk Utility failed to utilize the spaces left after removal of the BootCamp partition. I came to know only a complete hard drive format can fix this issue. But Stellar Partition Manager came to the picture and effectively formatted the unrecognized spaces with HFS file system and got back my spaces

Raleigh Gallant


Stellar Partition Manager is so helpful that now I hardly use disk utility for partitioning and resizing my hard drive.



One of the best Disk Utility alternative for partitioning Mac HDD.

Donald Stich


I tried Stellar Partition Manger Software after Disk Utility failed in creating a new partition on my Mac hard drive. And, within minutes of using this partition manager, the software created a new partition of size 100 GB from the total 200 GB of available hard drive space.



After installing Stellar Partition Manager, I hardly use Disk Utility for partitioning. For every other activity, DU is great, but it simply makes the partitioning task a mess especially on OS X El Capitan. I am awaiting the macOS Sierra upgrade eagerly.



I plugged out a NTFS hard drive from a dead Windows PC and wondered how to use it on Mac. Disk Utility wouldn’t detect the NTFS hard drive so I turned up to Stellar Partition Manager. This software allowed me to format the NTFS hard drive and erase it for Mac OSX Journaled.

Nate Eales


Thanks to Stellar Partition Manager for providing a friendlier interface for managing my partitions. Partitioning Mac hard disk with the facelifted Disk Utility is just inconvenient and non-productive. I no longer trust Mac's Disk Utility. The older version was the best. However, I appreciate the work done by the developers of Stellar Partition Manager application. I am waiting for newer updates eagerly.



Thanks for existing Stellar Partition Manager. I had a Windows NT hard drive having 100 GB of files and rest 400 gigs free. With your software, I created another partition on this drive and formatted with HFS transferred Macintosh HD files to it. Disk Utility just don't do it.

Kauan Melo Cunha


Stellar Partition Manager is the boss of Mac partitioning. I used it once and it resized Mac HD to occupy remaining useless 100 Gigs in the most reliable manner.



Great software with excellent in-built features. Expanded my startup disk easily.



My hard drive spaces went wasted when disk utility failed to use them for resizing Macintosh HD. I took Stellar Partition Manager boot drive and did the resizing in a bootable environment and it worked as planned.

Stephine Capell


My Seagate expansion hard drive lost its volume after I ejected the drive forcefully. I tried reformatting the disk with Disk Utility hoping to get back the volume but failed. Tried the same with Stellar Partition Manager and amazingly got back the original drive size. Thank you for being my sidekick Stellar.

Susanne Kistler


Disk Utility stubbornness forced me to look for 3rd party disk manager software. Luckily, I found Stellar Partition Manager tool for taking care of my disks on El Capitan.

Desmond Foulger


Excellent Utility - just waiting for a 100% update for macOS 10.13


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