If you want to start up again from the disk you erased, select Reinstall macOS in the utilities window, then click Continue and follow the onscreen instructions to reinstall macOS.Quit Disk Utility to return to the utilities window.After the erase is done, select any other internal volumes in the sidebar, then click the delete volume (–) button in the toolbar to delete that volume.ĭuring this step, disregard any internal volume named Macintosh HD or Macintosh HD - Data, as well as any volumes in the External and Disk Images sections of the sidebar.
You have to boot Mac into Recovery mode and format the hard drive or SSD to Apple file system first. If you don't see this button, click Erase instead. How to Install macOS on Mac from USB Drive (Advanced) If the drive was not partitioned or the partition table was corrupted, then you can not install macOS on Mac with the normal way. In the subsequent window, open the Format dropdown and choose Mac OS.
