Accidentlu deleted (-) the volume of Macintosh on the disk utility Recovery

Ouch...

Erase and reinstall macOS - Apple Support

mariajose288 Said:

"Accidentlu deleted (-) the volume of Macintosh on the disk utility Recovery: I accidently deleted the. Macintosh HD from the Utilities Disk in the Recovery. After I erased it I pressed the (-) button. When I went toreinstall the macOs software, there is no disk to install it into. HELP! I only wanted to erase the mac to give it away to a family member."

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Is the Drive Mounted?

Boot into Recovery Mode and then mount the hard drive

In Depth

1. Boot: into Recovery Mode [Hold Down: command + R upon boot]
2. Select: Disk Utility
3. Select: the Hard Drive
4. Click: "Mount" button

Try this once more.