Select your disk in Disk Utility Choose View > Show All Devices (if available) from the menu bar or toolbar in Disk Utility.
You can then restore your backup data using the Migration Assistant. From the utilities window in macOS Recovery, select Disk Utility and click Continue. If repairs aren't successful: As long as you have a backup of the data stored on the affected drive, reformat the drive and perform a clean installation of your operating system version.However, don't give up try rerunning the repair a few times. If First Aid reports a failure: "The underlying task reported failure" message indicates that it failed at making the needed repair.If you must have the file, then check your backup for a usable copy. If you don't need the file, or you can delete the file and easily recreate it.
#Boot in disk aid mac install#
You can examine the files in the DamagedFiles folder. Repair your Macintosh HD by booting into macOS Recovery > open Disk Utility > choose your Mac hard drive > click First Aid Im trying to install Mac os. More than likely, both files have become corrupt, but there's a slight chance you can recover one or both of them. The overlapped error indicates that two (or possibly more) files occupied the same location on the drive receiving repair. Once booted from OS X recovery, select Terminal from the utilities and then at. If First Aid displays an "overlapped extent allocation" error: Disk Utility will create a DamagedFiles folder at the root level of your startup drive. You can try booting from OS X recovery by holding CMD + R at the time of startup. Or, you can click on Finder > Applications > Utilities > Disk Utility. You can launch Spotlight from the Dock and search Disk Utility. Wait until the Mac is booted and reconnect the external display. When your Mac system is booting up in the usual manner, accessing Disk Utility is just similar to accessing any other app on your Mac. In some previous versions of First Aid, it was necessary to run the repair process multiple times to ensure the repairs were complete that is no longer required. To factory reset your device, however, click Disk Utility at the bottom of the list. If First Aid reports no issues: If First Aid indicates that the drive appears to be okay or that repairs are complete, you're done.
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