Delete a partition

Click Erase and then click Done.

How to remove a hard drive partition on your Mac

With the data erased from your partition, you still need to delete the now-empty partition in order to reallocate its space to the rest of your hard drive. To do so, select your hard drive from the left panel and then click the Partition button at the top of Disk Utility. On the pie graph on the left, click the wedge that represents the partition you just erased.

Click the " - " button and then click Apply.

How-To Repartition a Mac Hard Drive

After a minute or so, Disk Utility will finish applying changes to your drive and deem the operation successful. Click Done to complete your work here. Be respectful, keep it civil and stay on topic.

How To Partition A Hard Drive on Windows & Mac

We delete comments that violate our policy , which we encourage you to read. PCB is the ultimate master of the hard drive that governs the entire functioning of the drive at physical level. Apart from this, hard drive has a defined data storage process, which is responsible for the conversion and storage of your data documents, photos, videos and other files in a digital format.


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On the magnetic platter of your Mac hard drive; there are tracks and sectors to store data systematically. Above the disk level, the file system of the hard drive and the operating system have important role to play in the storage and accessibility of required data. The file system keeps information of partitions as well as files stored in the hard drive, while it is the operating system that helps storing and retrieving data from the hard drive.

Partitions are the logical separations in the physical memory of the hard drive.


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  • In order to store different kinds of files separately on your Mac hard drive, you require creation of multiple partitions. These partitions not only segregate different categories of data stored in the hard drive, but also are the reason behind systematic storage and easy access of the required data.

    How to Add a New Hard Drive Partition in Mac OS X

    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. Disk Utility helps in repartitioning of your existing Mac partition, in which one of your new partitions will contain the data in the original partition.