![]() Between the ability to check permissions and verifying the disk, it is possible to tell if a disk needs to be replaced, wiped and re-imaged, or is doing fine. Checking if these have changed or the general state of these permissions is very important to IT professionals. ![]() Partitions can also be verified, as well as have their disk permissions verified.ĭisk permissions can change because of applications installing incorrectly or a failing drive. In the case of the image above, the volume “Macintosh HD” also has a partition with the same name. Usually, nested inside of each volume is at least one partition. This is a very powerful function as it allows the user to run checks and repair the computer without reinstalling the operating system. If at some point it is not in the correct state, Disk Utility will tell the user what to do, which usually involves running repair disk. The volume can also be verified, the system can run a check to make sure that data is in its correct state. ![]() Note: These actions cannot be performed on Macintosh HD because I am not currently an administrator. Volumes can be unmounted from the computer (read: unusable to the user and not visible in Finder) to allow for First Aid on a drive and for partitioning the drive into parts. This area has a list of volumes currently connected to the computer, such as the internal hard drive or usb devices. The most important section is the area with the hard drive. The picture to the right has this computer’s hard drive, named “Macintosh HD”, and a bootable image named “Mac Installer.dmg”. On the left are drives are mountable images. This is located in Applications > Utilities > Disk Utility.ĭisk Utility has some very useful features. ![]() ![]() For example, the main internal hard drive can have permissions repaired, or the drive can be partitioned to allow for another operating system to be installed on the computer. It allows for the control of storage drives attached to the computer. The disk utility for Mac OS X is very powerful. ![]()
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