Disk Utility

Disk Utility is an essential tool for managing and troubleshooting storage devices on Mac computers. It is a built-in application that allows users to format, partition, repair, and erase hard drives, solid-state drives, and USB flash drives. It also provides disk information such as the amount of available space, file system type, and partition map scheme....
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The application offers several features to optimize the performance of disks, including verifying and repairing disk permissions, resetting the SMC (System Management Controller), and managing and creating disk images. Users can also securely erase data using the options provided, including three-pass and seven-pass erase.

Overall, Disk Utility is a valuable tool for managing and maintaining the health of storage devices on Macs, ensuring their optimal functionality and longevity.