- How to repair mac disk how to#
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If it works, you’ve saved time and money. Disk Utility is faster, easier, and free. (For what it’s worth, all three have performed flawlessly since their repair).ĭoes that mean you shouldn’t try Disk Utility’s First Aid or buy Drive Genius? Absolutely not. In the past four months, I have had three disks failures that Disk Utility and Drive Genius could not repair but that DiskWarrior could. The big benefit was that I didn’t lose half a day erasing and restoring disks and got back to work in half an hour instead of half a day. DiskWarrior succeeded after both others failed… Instead, I tried DiskWarrior, which repaired the disk damage after rebuilding and replacing the drive’s directories, all in around 30 minutes. Then, DiskWarrior Fixed It (Three Times)! ‘The Other Drobo’ is either not formatted or is a system owned drive that should not be used.” Note that both the Repair and Rebuild options are grayed out and unavailable.Īt this point, it seemed my only option was to erase (reformat) the recalcitrant disks. So I tried my next line of defense, Drive Genius… Drive Genius Failed, Tooĭrive Genius had a different alert I also don’t recall seeing before: Drive Genius can’t mount “The Other Drobo.”Ĭannot Mount Drive. Back up the disk and reformat it as soon as you can.” “macOS can’t repair the disk “The Other Drobo.”You can still open or copy files on the disk, but you can’t save changes to files on the disk. Disk Utility Failedįirst, Disk Utility displayed an alert I don’t remember ever seeing before: macOS can’t repair the disk “The Other Drobo.” Until recently, I’d have told you it was a three-way tie, with each of the three resolving roughly one-third of my disk issues over time. But, since the beginning of this year I’ve had three disk failures only one of these three apps could repair.
How to repair mac disk free#
That alone is reason enough to try it first. For another thing, who knows more about repairing your boot disk than Apple? And, for another ‘nother thing, it’s free (and you know how much I love free).īut when First Aid fails, as it sometimes does, I turn to a pair of third-party tools.
How to repair mac disk windows#
I spent seven years writing breaking news for CNET as one of the site’s East Coast reporters. I've also written two books for Wiley & Sons- Windows 8: Five Minutes at a Time and Teach Yourself Visually LinkedIn.When a disk fails or acts wonky-by not mounting when it should, or by disappearing from the desktop when it shouldn’t-the first thing I try is Disk Utility’s First Aid.įor one thing, it’s the only one of the three that doesn’t require you boot from a different disk to repair your startup disk (macOS High Sierra only). Beyond PCMag, I've written news stories and tutorials for a variety of other websites and publications, including CNET, ZDNet, TechRepublic, Macworld, Popular Science, Time, Fortune, US News & World Report, and AARP Magazine. I've been working for PCMag since early 2016 writing tutorials, how-to pieces, and other articles on consumer technology.
How to repair mac disk how to#
If you don’t know the password for the root user, follow this Apple support page (Opens in a new window) to learn how to change this password. Rather, it’s the password for the root user on your Mac. This is not the password for the account that you use to log in. OS X El Capitan: sudo /Applications/Install\ OS\ X\ El\ Capitan.app/Contents/Resources/createinstallmedia -volume /Volumes/ MyVolume -applicationpath /Applications/Install\ OS\ X\ El\ Capitan.app MacOS High Sierra: sudo /Applications/Install\ macOS\ High\ Sierra.app/Contents/Resources/createinstallmedia -volume /Volumes/ MyVolume MacOS Mojave: sudo /Applications/Install\ macOS\ Mojave.app/Contents/Resources/createinstallmedia -volume /Volumes/ MyVolume MacOS Catalina: sudo /Applications/Install\ macOS\ Catalina.app/Contents/Resources/createinstallmedia -volume /Volumes/ MyVolume MacOS Big Sur: sudo /Applications/Install\ macOS\ Big\ Sur.app/Contents/Resources/createinstallmedia -volume /Volumes/ MyVolume Replace the string My Volume with the volume name of your USB drive. At the Terminal prompt, type one of the following commands, depending on your version of macOS.
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Return to the Utilities folder on your Mac and open the Terminal app. Make sure the USB drive is still connected to your Mac.
How to repair mac disk Pc#
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