MacBook Pro locked with Find My Mac and won't let me boot I was playing around with the Find My Mac iPhone app (just testing it out) and hit the "lock" option. My MacBook Pro is now locked and I have no place to enter the 4 digit PIN.

When I start it, it shows the Apple logo with a loading circle and it shuts down. If I start whilst holding alt it asks for the PIN, which I enter, then it shows three partitions: Macintosh HD, Recovery &amp; Windows. If I select Windows it works perfectly, but the two others show the problem with the Apple logo and loading circle before it shuts down.
Boot into internet recovery. Hold down option + command + R at the chime.

Use Disk Utility to repair the volume and then reboot your machine normally. You should be able to unlock it now.