If the hard drive space is listed at “Unallocated” at the bottom of disk management, you will need to format the drive.

If the hard drive space is listed at “Unallocated” at the bottom of disk management, you will need to format the drive.

You may have to click Scan and repair drive several times to resolve all errors.

You may need a USB 3 to USB-C adapter if your Mac doesn’t have traditional USB ports.

You may need to click the arrow icon to the left to expand the media device to display your hard drive.

You can also get into First Aid by going into Recovery mode when your Mac boots up. From there, go into utilities, then go into Utilities. From there, you can pull up First Aid. [1] X Expert Source Yaffet MesheshaComputer Specialist Expert Interview. 22 September 2020.

If you don’t see any repairs listed, your hard drive doesn’t have any bad sectors to repair.