Click Disk Utility when in macOS Recovery. Click Continue. Click on your Mac's startup drive in the Disk Utility sidebar. It should be the drive at the top of the sidebar if there are multiple drives. Click First Aid. First Aid will run, checking the health of your Mac's drive. This process could take a little while. Mac OS 10.11+ Launch Disk Utility by opening Finder and navigating to Applications Utilities Disk Utility. If you are unable to boot into the users account then you can run Disk Utility from either the recovery partition or from the netboot environment. Click on the 'First Aid' button while selecting the hard drive on the left panel. Mar 24, 2020 If you're not repairing the disk your Mac started up from, you don't need to start up from macOS Recovery: just open Disk Utility from the Utilities folder of your Applications folder. Locate your disk in Disk Utility Choose View Show All Devices (if available) from the menu bar or toolbar in Disk Utility.
By default, a Mac runs a different file system, so it may bring issues while partitioning your disk on Disk Utility. Hard drive partitioning is a common issue discussed in many tech forums. In a thread on Apple’s support forum, users complain that their Mac Disk Utility partition grayed-out while trying to partition their external hard drives.
Disk Utility
Operating system
macOS
Type
Utility
Website
support.apple.com/guide/disk-utility/welcome/mac
Disk Utility is a system utility for performing disk and disk volume-related tasks on the macOSoperating system by Apple Inc.
Disk Utility For Mac
Functions[edit]
The functions currently supported by Disk Utility include:[1]
Creation, conversion, backup, compression and encryption of logical volume images from a wide range of formats read by Disk Utility to .dmg or, for CD/DVD images, .cdr
Mounting, unmounting and ejecting disk volumes (including both hard disks, removable media and disk volume images)
Enabling or disabling journaling
Verifying a disk's integrity, and repairing it if the disk is damaged (this will work for both Mac compatible format partitions, and FAT32 partitions with Microsoft Windows installed)
Erasing, formatting, partitioning[2] and cloning disks
Secure deletion of free space or disk using a 'zero out' data, a 7-pass DOD 5220-22 M standard, or a 35-pass Gutmann algorithm
Adding or changing partition table between Apple Partition Map, GUID Partition Table and master boot record (MBR)
Restoring volumes from Apple Software Restore (ASR) images
Checking the S.M.A.R.T. status of a hard disk
Disk Utility functions may also be accessed from the macOS command line with the diskutil and hdiutil commands.[3]
Best Disk Utility For Mac 2019
History[edit]
In the classic Mac OS, similar functionality to the verification features of Disk Utility could be found in the Disk First Aid application. Another application called Drive Setup was used for drive formatting and partitioning and the application Disk Copy was used for working with disk images.
Before Mac OS X Panther, the functionality of Disk Utility was spread across two applications: Disk Copy and Disk Utility. Disk Copy was used for creating and mounting disk image files whereas Disk Utility was used for formatting, partitioning, verifying and repairing file structures. The ability to 'zero' all data (multi-pass formatting) on a disk was not added until Mac OS X 10.2.3.[4] 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. Mac OS X Leopard added the ability to create, resize and delete disk partitions without erasing them, a feature known as live partitioning. In OS X El Capitan, Disk Utility has a different user interface and lost the ability to repair permissions due to obsolescence,[5] create and manage disks formatted as RAID, burn discs and multi-pass format internal solid-state drives and encrypted external drives.[6]
See also[edit]
References[edit]
^'Disk Utility 10.5 Help: Testing and repairing a disk or volume'. Apple Inc.
^'Mac OS X 10.5: About resizing disk partitions'. Apple Inc.
^Landau, Ted; Frakes, Dan (December 20, 2005). Mac OS X Help Line, Tiger Edition. Peachpit Press. ISBN9780132705240.
^'Mac OS X: About the Mac OS X 10.2.3 Update'Archived March 27, 2008, at the Wayback Machine. Apple Inc.
^'OS X v10.11 Developer Beta 7 Release Notes'. Mac Developer Library. Apple Inc. August 18, 2015. Retrieved October 7, 2015.[permanent dead link]
^Cunningham, Andrew; Hutchinson, Lee (September 29, 2015). 'OS X 10.11 El Capitan: The Ars Technica Review'. Ars Technica. Retrieved September 30, 2015.
External links[edit]
Retrieved from 'https://en.wikipedia.org/w/index.php?title=Disk_Utility&oldid=966464915'
This document details how to use Apple's built in disk utility to attempt minor software repair in OSX.
Apple Disk Utility is a utility built into OSX that identifies and repairs minor problems with the hard drive. If a computer is unable to successfully complete any of these steps it should be booked in for software repair. When checking in make sure to get format approval as the drive will likely have to be formatted or replaced completely.
Mac OS 10.11+
Launch Disk Utility by opening Finder and navigating to Applications > Utilities > Disk Utility. If you are unable to boot into the users account then you can run Disk Utility from either the recovery partition or from the netboot environment.
Click on the 'First Aid' button while selecting the hard drive on the left panel. Click the 'Run' option when prompted.
If steps 1 and 2 were successful, run first aid again. This time select the partition (not the disk) on the left panel. Click Run when prompted.
You will receive a prompt if repair was successful.
If any part of this process fails you will likely have to check it in for a format/reinstall. 2004 jeep grand cherokee driver door wiring diagram chart. Remember to get format approval if possible for all software check-in cases.
Disk Utility For Mac
Mac OS 10.6-10.10
Disk Utility For Macos Mojave
Launch Disk Utility by opening Finder and navigating to Applications > Utilities > Disk Utility. If you are unable to boot into the users account then you can run Disk Utility from either the recovery partition or from the netboot environment.
Run 'Verify Disk' on the hard drive. If verification fails, you will be prompted to attempt 'Repair'. Only continue to step 3 if repair is successful.
Select the boot partition (usually Macintosh HD) and run 'Verify Disk'. If verification fails, you will be prompted to attempt 'Repair'. Only continue to step 4 if repair is successful.
Run 'Repair Disk Permissions' on the boot partition. Do NOT select 'Verify Disk Permissions'.
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You will receive a prompt if repair is successful.
Disk Utility For Mac And Windows
Virtually every computer will make at least a couple file permission repairs, so don't worry if you see a handful of repaired files on a perfectly healthy computer.
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