first aid mac volume could not be unmounted

While protecting your system from inadvertent or malicious misuse of root access, certain functions, such as the repair disk permissions option in Disk Utility, are no longer available. This new security feature restricts the functionality of the root account on the operating system. Starting with El Capitan, Apple instituted System Integrity Protection (SIP). In versions of the Mac operating system prior to El Capitan OS X 10.11, an option existed in Disk Utility that let you repair disk permissions. Creation and conversion of disk images in various formats.Repairing damaged or corrupted storage device configurations.Verifying the integrity of your storage devices.Partitioning of hard disks and storage devices.Mounting, unmounting, and ejecting disks.

Some of the things that you can do with Disk Utility are: Let’s take a look at what this application is and how you can use it on your Mac.ĭisk Utility is a macOS and Mac OS X system utility that enables the user to perform tasks related to their hard disks and storage devices. One of the most valuable and useful utilities is Disk Utility. Utilities such as Activity Monitor, Terminal, and System Information also give you insight into the workings and performance of your machine.

Clicking the Apple icon in the upper left corner and then choosing “About This Mac” allows you to investigate many details concerning the hardware and software components that comprise your system. Mac users can gain a wealth of information about their system with tools provided with their operating system.

First aid mac volume could not be unmounted