Hey, I'm running dual boot with Windows 10. I just finished installing Windows 10 and it is seamless. But when I try to get into OS X El Capitan, holding the option key when starting up, it shows a grey lock screen with a password space. I tried everything, my OS X password, my Windows password, etc. Please help, I need OS X and Windows by Monday.
MacBook Air, OS X El Capitan (10.11.3)
Greetings ppariya,
Thanks for using the Apple Support Communities!
From your post, I understand that when you boot your Mac and try to load OS X, you are seeing a screen with a padlock on it. This sounds like you have enabled a firmware password. The following article discusses firmware passwords and how to use them.
Use a firmware password on your Mac - Apple Support
Have a great day!
I would like to point out that after I installed Windows 10 the Mac automatically set a firmware password. I never set a firmware password before or after installing Windows 10.
When I try to get into OS X it shows a grey lock screen.
