In such rare cases, you’ll need to erase or format your disk with Disk Utility. Also, not all errors that are found can be repaired by Disk Utility.

This gives you the best results when looking for disk errors. Keep in mind that whenever you’re attempting to repair a disk, start with the volumes, followed by the containers, and lastly the disk itself.

Once you’re done repairing your disk, you can exit out of macOS Utilties by clicking on the Apple logo from the menu bar and choosing “Restart” to reboot your Mac normally. Hopefully you have a better idea regarding how to troubleshoot and fix disk errors on your Mac. Once it’s complete, click on “Done” and repeat the above steps to run First Aid on the other volumes, containers, and disks.When you’re prompted to confirm your action, choose “Run” to begin checking the volume for errors and repair if necessary.Next, you need to select a particular volume as shown below and then click on the “First Aid” option located at the top of the window. The startup disk is located at the top of the sidebar and you’ll need to expand it to access its containers and volumes.

Now, all the internal and external disks, their volumes and containers will show up on the left pane.

Here, click on the View icon next to Disk Utility and choose “Show All Devices” as indicated in the screenshot below.

Here, select “Disk Utility” and click “Continue” to get started.

Now, you’ll be taken to the macOS Utilities screen.

Hover the cursor over “Options” and click on “Continue”. This will take you to the Startup Disk and Options screen. Keep pressing the power button until you see “Loading startup options” right below the Apple logo. Once you’re done, press and hold the Touch ID / power button on your Mac to boot it up.

If your Mac is turned on, you’ll need to shut down your Mac first.

You’ll need to boot into recovery mode, a process which is different with ARM Apple Silicon Macs compared to Intel.

How to Use Disk First Aid with M1 Macsīefore you go ahead with the following procedure, make sure you have made a Time Machine backup of your Mac so that you don’t permanently lose files that may be damaged during the process or if Disk Utility detects errors that it can’t repair. Thus, using the repair function may be useful. Be cautious about disk errors though, as they can often lead to unexpected system behavior, and sometimes major errors can even prevent your machine from booting completely. In addition to allowing users to erase and format their Mac’s storage drive before reinstalling macOS, it’s also capable of searching for errors related to the formatting and directory structure of the disk. For those who aren’t aware, Disk Utility has been an integral part of macOS since the beginning of Mac OS X.

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