If you run First Aid from recovery directly on a volume, then the utility program only verifies the content pertaining to that volume without performing any additional checks. Remember if you have run First Aid from recovery to fix SSD drive or any external hard drive, Disk Utility function verifies partition table to perform additional authentication and then examines each volume individually to fix issues. In case, if it reports error messages like Disk Utility can’t repair your disk or The underlying task reported failure, try to run First Aid Disk Utility Repair again. This way you can run First Aid from recovery to repair your disk successfully. Now, on the left menu, choose the disk or volume you want to repair. Select Disk Utility option and click Continue.Ĥ. Soon after your Mac restarts, hold Command and R keys until the Apple logo shows up.ģ. How to run first aid from recovery to repair disk errors?Ģ. As one wrong command might cost you a huge amount of data loss from your external disk. Note: It is always suggested to backup data from SSD before running First Aid Disk Utility.

Now, you can run First Aid from recovery without getting any error.

After executing these commands, go back to Disk Utility and proceed to repair your SSD drive.

Then, enter diskutil repairDisk /dev/disk0 command to repair your SSD drive.

To verify your SSD drive, enter the command- diskutil verifyDisk /dev/disk0.

If you have failed to run First Aid in Recovery Mode, then use the Command Terminal to fix unable to repair Mac SSD from first aid recovery : Run First Aid in Recovery Mode using Command Line. This Disk First Aid utility validates and repairs errors and logical problems associated with external drives like SSD not working properly, Mac system having startup issues, issues pertaining to the file system like APFS, HFS, and HFS+, etc. So, here is an article to help you fix unable to run First Aid Disk Utility in recovery mode.įirst Aid is functionality available under Mac Disk Utility. Well! This has been a quite common issue now, Mac users trying to run First aid from recovery mode to fix corrupt SSD, USB drive, or external drive not showing up on Mac. Can you please help me to fix this issue?” But, I got the same error message as above.

When I got into Recovery Mode, I opened Disk Utility and then selected the SSD drive to run First Aid.

So I restarted my computer by holding Cmd-R options to enter Recovery mode. To repair the startup volume, run First Aid from Recovery.' 'First Aid found corruption that needs to be repaired. “When I tried to run First Aid on the SSD drive, it prompted an error stating that

First aid failed on external hard drive