I've a Mac Mini and I tried to reinstall Sierra yesterday.
- I used Command + R at the log screen
- Erased my Hard Drive
- Click on Reinstall macOS Sierra
But when it was close to finish my internet dropped because of the rain and the reinstall failed. I tried again but nothing happened, so I restarted and now I can't access the recovery screen. My Mac boots directly to a grey folder with a question mark and the Command + R doesn't work.
What can I do now?