Repair a storage device in Disk Utility on Mac. Disk Utility can fix certain disk problems—for example, multiple apps quit unexpectedly, a file is corrupted, an external device doesn't work properly, or your computer won't start up. Disk Utility can't detect or repair all problems that a disk may have. The Disk Utility window appears as three panes. Across the top of the window is a button bar, containing commonly used functions, including First Aid. On the left is a sidebar that displays all the mounted volumes connected to your Mac; on the right is the main pane, which displays information from the currently selected activity or device. Open Menu Close Menu. To browse the Disk Utility User Guide, click Table of Contents at the top of the page. If a disk in a disk set on Mac fails or is missing. Dec 08, 2019 Click Disk Utility when in macOS Recovery. 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.
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When Apple updated Yosemite to Mac OS X El Capitan, it made huge changes to the Disk Utility. The streamlined interface is easy to use, but it's missing some key functions. Some of them are there though if you know where to look. Mac system 7 emulator.
Repairing Permissions in El CapitanPrintable constitution and amendments. The most obvious feature that Apple seemed to take away was rRepair permissions. That feature solved a few Mac problems, but, for the most part, was unnecessary. The operating system checks permissions during software updates. At other times, those permissions aren't allowed to be changed. Repairing permissions can still be an effective troubleshooting step. Some tech support providers won't help you unless you repair those permissions. There are a few different ways to do it.
Cool El Capitan Features: If you recently upgraded, check out how to use Split View and the upgraded Mission Control.If you like using terminal, this command will repair permissions.
sudo /usr/libexec/repair_packages --repair --standard-pkgs --volume /
If you don't like messing around in Terminal, MarcPac wrote RiparaCapo. That free app does all the repair permissions behind the scenes. I think it's a little safer to run that program as a terminal is a powerful tool on a Mac.
Secure Erasing a VolumeIn previous Disk Utilities, you could specify how you wanted a volume erased under options. Originally, Apple gave you a 35-pass method as the most secure erase method. In Lion and later versions, Apple removed that option and left you with a 7-pass erase as the most secure. That's enough for most users.
Securely deleting files: Disk Utility Mac Restore You don't have to erase the entire drive to securely erase a file. You can do this through terminal with thediskutil command. Apple removed Secure Empty Trash and replaced it with Delete Immediately.To access that option in El Capitan, you'll need to select a Volume rather than a physical disk. If the disk is unformatted, you won't be able to secure erase it. That's an annoying change.
Again, the command line comes to the rescue. You can specify a 34-pass erase using the secureErase command. Without the GUI of OSX protecting you, it's easy to select the wrong disk to erase. I'd avoid using this command unless the Disk Utility isn't working for you.
I'm not sure why Apple removed this from the main Disk Utility. Most likely the reason is simplicity. Creating a RAID is specialized functionality so they left it to Terminal and the diskutil command. Also, improper use of the RAID function could cause problems with the Fusion drive scheme.
Another option is to reboot your Mac into Recovery Mode. The Disk Utility in recovery mode does support creating a RAID. Video to video converter.
Disk Repair and First AidThe options for repairing a disk changed. Instead of Verify Disk and Repair Disk, the options merged. Now you select the volume and click First Aid. That saves a few steps from previous versions.
Serious errors still need advanced utilities like Disk Warrior to fix the system.
Burning a Disk Macbook Pro Disk Utility StartupWhile most new Macs don't have an optical drive, some of us still need to burn CDs and DVDs. Disk Utility was a great way to copy a disk or convert it to an ISO. Apple removed those features in El Capitan.
Need to copy a hard drive? Check out our guide to creating a bootable backup.The good news is most of these functions moved to the Finder. If you select an ISO or other master image file and right-click, you'll see a Burn Disk Image to Disc option. That saves you a few steps compared to using Disk Utility. If you want to burn a folder or file to a CD or DVD, right-click the item and select Burn to Disc.
If you want to create an image from an optical drive the process is the same as it was in previous versions. From the File Menu in Disk Utility select New Image and then pick Image From and the name of the item you want to copy. Under Format, if you want to be able to burn a copy, pick DVD/CD Master. That creates a .CDR file that you can burn directly from the Finder.
Encrypted Volumes: To keep your files secure, consider creating an encrypted volume or folder. New Feature: Disk OverviewThis is a similar overview you get when you go to About This Mac and select Storage. The key difference between the two views About The Mac shows how much space is taken by backups. Otherwise, the views are the same. Disk Utility adds some information that's useful in Terminal like what device it is and the drive format. I think it's a waste having it in both places.
Most Everything Else is the SameOther than these changes, most of the features remain the same. Creating a volume with different formats is the same. Erasing a PC formatted drive is still the same, although the button placement moved.
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The above article may contain affiliate links which help support Guiding Tech. However, it does not affect our editorial integrity. The content remains unbiased and authentic.Also See#hard disk #OS X El Capitan Did You Know
The term Wi-Fi doesn't have a full form.
More in Mac Top 4 Ways to Fix Mac Desktop Icons Missing or Not ShowingIf you experience these issues on Mac, your disk may need recovery:
- multiple apps quitting unexpectedly
- corrupted files and access errors
- external devices work improperly
- your computer won't start up
If you can still turn your Mac on, check the startup disk with an app called CleanMyMac X. Open its Maintenance module and run 'Verify Startup Disk'. If you get the 'Disk needs repair' error, your disk needs immediate attention.
Don't worry, it doesn't necessarily mean you have to replace it right away, there's still a chance to fix it.
We'll go over how to perform hard disk repair on Mac using software solutions. That's only possible if your disk can be saved by means of Mac's native app, Disk Utility. If it fails, the only alternative is backing up your data and getting a new disk.
Hard drive recovery using Disk Utility- Print this article or open it on any other device. You'll lose access to it after you restart your Mac later.
- Click on the Apple menu (top left corner), choose Restart.
- When your Mac restarts, press Command + R and hold the keys until the Apple logo appears.
- Select Disk Utility and click Continue.
- In the sidebar, choose the disk you think needs repair.
- Find First Aid and click on it.
Note, that if you are using FileVault to encrypt your disk, you must mount the disk first. To do it, click Mount at the top of the Disk Utility window. Then, enter your Mac account password in the dialog that appears.
At this point, there are two options.
Case 1. Disk Utility might tell you right away that your current startup disk is on the very edge of failing. This means you need to promptly back up all your files and take your beloved Mac to the repair shop. That's about all you can do.
How to back up your MacIf you've never used Time Machine, you'll need to configure it first: Make dvd on mac.
- Connect external storage (AirPort Time Capsule, USB flash drive, portable hard drive, or else).
- Go to System Preferences and click on Time Machine.
- Click the Select Backup Disk button in the center of the window.
- Choose the storage device you wish to back up your files to and click Use Disk.
That's it! Your first backup will be started automatically in a couple of minutes. More detailed backup information is specified next to the Select Disk button. We recommend connecting your Mac to a power cable before starting the backup.
If your Time Machine is already configured, you probably know what to do:
- Click on the Time Machine status menu at the top right corner of the screen
- Choose Back Up Now
Can't see Time Machine among status menus? Then, open System Preferences > Time Machine and select the 'Show Time Machine in menu bar' checkbox.
Case 2. If Disk Utility offers you to run diagnostics, simply click Run.
If it reports that the disk has been repaired, you're free to close it all and live a happy life from now on. But, unfortunately, there can be other troublesome issues.
For example, Disk Utility may inform you that the underlying task reported failure. In this case, you can try to repair the disk again. If that fails, use our guide above to back up your files and then completely reformat the disk. You'll need to remove all the info from it, reinstall the operating system and restore the data afterward.
If you continue having issues with your disk and neither recovery option works, it may be physically damaged. Which means you should take it to your local Mac service, they will be happy to assist you at this point.
How to protect a disk from failure and keep Mac healthyWith the proper software tools, you can monitor your Mac's well-being and keep it speedy and sound for years.
There are two essentials to a good-working Mac: a clean drive and a fast system. Both are covered by CleanMyMac X. It removes useless files from the drive, monitors your Mac's performance, and keeps your macOS running smoothly.
That's about it with DIY Mac hard disk recovery. Hope this article helps, stay tuned!
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