Disk Utility

The functions currently supported by Disk Utility include:[1] Disk Utility functions may also be accessed from the macOS command line with the diskutil and hdiutil commands.

[3] It is also possible to create and manage RAM disk images by using hdiutil and diskutil in terminal.

The ability to "zero" all data (multi-pass formatting) on a disk was not added until Mac OS X 10.2.3.

[5] Further changes introduced in Mac OS X Tiger, specifically version 10.4.3, allowed Disk Utility to be used to verify the file structure of the current boot drive.

In OS X El Capitan, Disk Utility has a different user interface and lost the abilities to repair permissions due to obsolescence,[6] create and manage disks formatted as RAID, burn discs, and multi-pass format internal solid-state drives and encrypted external drives.