![]() ![]() ![]() Click the hard disk that reported the error, click the “First Aid” tab, and then click “Repair Disk”.On the Mac OS X Utilities screen, select “Disk Utility”.Select “Recovery HD” from the start menu.Restart your Mac and hold down Command + R (hold down your Option key on some Macs).This allows you to do it in modern versions of MacOS, including macOS Sierra, High Sierra, Mac OS X El Capitan, Mavericks, Yosemite, OS X Lion, Mountain Lion, and OS X Mavericks.īefore proceeding, you should quickly back up your drive using Time Machine. In this case, all you have to do is reboot the Recovery HD partition and run the repair disk from there. How to repair the boot disk with Disk Utility This does not mean that you cannot repair the boot drive, it just requires a new step, which we will discuss next. If you see a red message saying “Error: This disk needs to be repaired”, you can just click the Repair Disk button to start that repair process, which works on all internal or external drives – If that drive is not a boot disk, you will notice that the Repair Disk button is not at hand. ![]() If you used Disk Utility from macOS Recovery, you can now restart your Mac: choose Apple menu > Restart.For most users, what you see looks like this, finalizing the message “Partition map appears to be OK,” indicating that no errors were found:Ĭhecking the map of the “APPLE Media” area Checking the conditions Checking the partition list Checking the EFI system partition Checking the EFI system partition size Checking the EFI system partition file system Checking all the items in the EFI partition loader Checking the physical volume partitions of the core repositories The partition map appears to be OK The order of repair in this example was Macintosh HD - Data, then Macintosh HD, then Container disk4, then APPLE SSD. Keep moving up the list, running First Aid for each volume on the disk, then each container on the disk, then finally the disk itself. If you're asked for a password to unlock the disk, enter your administrator password.Īfter Disk Utility is done checking the volume, select the next item above it in the sidebar, then run First Aid again.If the button is dimmed and you can't click it, skip this step for the disk, container, or volume you selected.If there is no Run button, click the Repair Disk button instead.In this example, the last volume on the disk is Macintosh HD - Data.Ĭlick Run to begin checking the selected volume for errors. For each disk that you're repairing, start by selecting the last volume on that disk, then click the First Aid button or tab. ![]()
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February 2023
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