{"id":83224,"date":"2022-07-08T08:47:54","date_gmt":"2022-07-08T13:47:54","guid":{"rendered":"https:\/\/eshop.macsales.com\/blog\/?p=83224"},"modified":"2022-07-11T08:02:53","modified_gmt":"2022-07-11T13:02:53","slug":"how-to-check-and-repair-a-disk-using-macos-montereys-disk-utility","status":"publish","type":"post","link":"https:\/\/eshop.macsales.com\/blog\/83224-how-to-check-and-repair-a-disk-using-macos-montereys-disk-utility\/","title":{"rendered":"How to Check and Repair a Disk Using macOS Disk Utility"},"content":{"rendered":"\n

You can use the Disk Utility in macOS to repair a variety of problems. Let\u2019s look at how to repair a storage device that you use with your Mac running macOS Monterey.<\/p>\n\n\n\n

About Disk Utility<\/h2>\n\n\n\n

Disk Utility is a tool for performing disk and disk volume-related tasks in macOS. In the classic Mac OS (pre-Mac OS X), similar functionality to the verification features of Disk Utility could be found in the Disk First Aid<\/a> application.<\/p>\n\n\n\n

Disk Utility can fix certain disk problems such as (as Apple notes)  multiple apps quitting unexpectedly, a corrupted file, a wonky external device, or the refusal of your Mac to power up. Of course, it can\u2019t fix ALL problems, but it\u2019s certainly a tool when you\u2019re having issues.<\/p>\n\n\n\n

By the way, you may want to print this tutorial so you can refer to it later. You don\u2019t have access to it when you\u2019re diagnosing problems on your Mac\u2019s main drive.<\/p>\n\n\n\n

Run First Aid<\/h2>\n\n\n\n

To check and repair a disk, first run First Aid on each volume and container on the storage device in turn, then run it on the storage device itself.<\/p>\n\n\n\n

\u00b0 Open Disk Utility (Finder > Applications > Utilities).<\/p>\n\n\n\n

\"Disk
Disk Utility<\/figcaption><\/figure><\/div>\n\n\n\n

\u00b0 Choose View > Show All Devices<\/p>\n\n\n\n

\"Show
Show All Devices<\/figcaption><\/figure><\/div>\n\n\n\n

\u00b0 In the sidebar, select the disk you’re having problems with.<\/p>\n\n\n\n

\u00b0 Click on First Aid at the top, and select Run.<\/p>\n\n\n\n

If you\u2019re checking your startup disk or startup volume, restart your computer in macOS Recovery, select Disk Utility in the macOS Recovery window, then click Continue. If you check your startup volume (Macintosh HD), make sure you also check your data volume (Macintosh HD – Data).<\/p>\n\n\n\n

\"First
First Aid<\/figcaption><\/figure><\/div>\n\n\n\n

\u00b0 Once complete, you’ll see a drop-down showing the status; click this to explore. Disk Utility will try to repair what it can and warn you about errors it found that it can’t fix.<\/p>\n\n\n\n

If Disk Utility reports that the disk appears to be OK or has been repaired, you\u2019re done. You can click Show Details to see more information about the repairs. Otherwise, go to the \u201chow to repair a storage device\u201d section below.<\/p>\n\n\n\n

If Disk Utility tells you the disk is about to fail, you\u2019ll need back up your data and replace the disk, Sadly, you won\u2019t be able to repair it.<\/p>\n\n\n\n

How to repair a storage device<\/h2>\n\n\n\n

If Disk Utility has reported \u201coverlapped extent allocation\u201d errors, two or more files occupy the same space on your disk; at least one of them is likely to be corrupted. You need to check each file in the list of affected files. Most of the files in the list have aliases in a DamagedFiles folder at the top level of your disk.<\/p>\n\n\n\n

If you can replace a file or re-create it, delete it. If it contains information you need, open it and examine its data to make sure it hasn\u2019t been corrupted.<\/p>\n\n\n\n

If Disk Utility can\u2019t repair your disk, or you\u2019re told that the First Aid process failed, try to repair the disk or partition again. If that doesn\u2019t work, back up as much of your data as possible, reformat the disk, reinstall macOS, then restore your backed-up data.<\/p>\n\n\n\n

If your Mac has a Fusion Drive and you see a flashing question mark or alert, see the troubleshooting section of the Apple Support article About Fusion Drive, a storage option for some Mac computers<\/a>. <\/p>\n","protected":false},"excerpt":{"rendered":"

You can use the Disk Utility in macOS Monterey to repair a variety of problems. Let\u2019s look at how to repair a storage device that you use with your Mac running macOS Monterey.<\/p>\n","protected":false},"author":108,"featured_media":83239,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_monsterinsights_skip_tracking":false,"_monsterinsights_sitenote_active":false,"_monsterinsights_sitenote_note":"","_monsterinsights_sitenote_category":0,"spay_email":"","footnotes":""},"categories":[4],"class_list":["post-83224","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-tech-tips"],"yoast_head":"\nHow to Check and Repair a Disk Using macOS Disk Utility<\/title>\n<meta name=\"description\" content=\"You can use the Disk Utility in macOS Monterey to repair a variety of problems. 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