Repartition Mac Drive with Partition Manager

Disk partitioning is the act of dividing a hard disk drive into multiple logical storage units referred to as partitions. If a running application is not terminated properly by OS, it may result in application crashing , corruption of the logical disk structure, incorrect software installation etc.. Such reasons may result as inaccessible volumes. In this scenario, it is suggested to repartition the drive.

Many Mac users are surprised to hear that Mac partitions can be repartitioned without destroying the existing partition’s data. Partitioning is particularly useful if you run more than one operating system. Some basic tasks you can accomplish with Mac Drive are - create, delete, resize Mac partitions. But, sometimes we need to repartition Mac drive.

Steps of repartitioning Mac Drive With Disk Utility:-

1. Close all open applications.
2. Connect the drive to be formatted.
3. Open the Disk Utility, reached by accessing Applications/Utilities/Disk Utility.
4. Using the left-pane window, select the drive to be reformatted.
5. Using the right-pane window, select the Partition tab. Existing data appears color-coded blue. Free space appears color-coded white.
6. Resize the volume by clicking and dragging the drive’s bottom right corner. Adjust the drive to possess the new size you wish for it to possess. Add a new volume by clicking the + sign icon found in the bottom left corner. When adding new volumes, you have to provide a name for the volume and specify its formatting. Alternatively, you can remove a volume by highlighting it and clicking the - icon found in the bottom left corner. When deleting volumes, you will be prompted to confirm the change to prevent accidental deletion of a volume.
7. Click the Apply button to apply the changes.

Alternative Methods:- 
Sometimes, while initializing the new Mac drive, users do not have the exact idea on how many partitions they actually require. This usually leads to the repartitioning of their existing partitions to form more number of volumes.

 
You can easily create, delete, resize, Mac drive. You can easily hide/reveal Mac partitioned drive for the purpose of security. If there are any unused partitions in your hard drive, with the help of Delete or Format option, you can remove them, making room for a new partition.