1) GUI – Stellar Partition Manager’s user interface resembles the Disk Utility of OS X Yosemite and earlier versions hence it is much friendlier to users running macOS Sierra 10.12 or OS X El Capitan 10.11. Important action buttons such as Add a partition, Format, Delete, Hide, Reveal, Rollback and Refresh are clearly visible on the software interface.
2) Add a Partition – Follow below procedure to add a partition out of available free spaces:
3) Delete a Partition – Below is a simple method to delete a partition with partition manager software: