Help - I've bricked my MacBook Pro.

  Hampstead 10:44 27 Jul 2017
Locked

I am selling my MacBook so thought I'd clean it up first.

I ran the disc utility and erased disk - All good so far, then I formatted the disc to OS X Base System.

Wrong!

I can't install macOS Sierra as the disc is incorrectly formatted. Everything is greyed out noe in disc utility.

What can I do to get this running again?

I have macOS Sierra on a USB if it helps. It won't boot from there though.

  Procrastinus 12:05 27 Jul 2017

I am NO expert with Mac, but you could try formatting your HDD with Mac OS Extended(Journaled). I believe this to be the format for re-installation. Good luck!

  Forum Editor 18:03 27 Jul 2017

Moved to Apple Help from Tech Helproom.

  HondaMan 21:10 27 Jul 2017

Go to the Macworld site. look for a "How to ..." article on creating a bootable flash drive. After you have created your bootable drive you can reinstall Sierra

This thread is now locked and can not be replied to.

Elsewhere on IDG sites

Last Chance: Win an Honor Band 5

Acclaimed illustrator James Jean's comic book past gets celebrated in new book

Best Apple tech gifts for Christmas 2019

Noël (2019) : idées cadeaux & guide d'achat !