I tried to clean install OS X El Capitan on my Mac, but it won’t boot from the USB drive. Here are the steps I took to create the bootable USB drive (I have a Mid-2014 MacBook Pro with Retina Display):
- Downloaded the latest OS X El Capitan (10.11.3) from the Mac App Store.
- Created a bootable USB drive using
createinstallmedia(as explained in Apple’s documentation) and it went well.
- Tried booting from USB drive. It loads through the middle, but then a prohibited sign shows up and nothing happens.
What are my options now?
How can I determine what the problem is? I know Internet Recovery is one of my options, but I can’t connect to my home Wi-Fi (apparently for no good reason) and I have to do it with my iPhone’s Hotspot, and I happen to have the setup for El Capitan. (And Internet Recovery will install OS X Mavericks on my MacBook, right? Because it was shipped with Mavericks.)