My macbook air keeps on showing a lock with a password after I pressed the 'Option' key to fix up the flashing folder with a question mark?
MacBook Air (11-inch Mid 2013), OS X Yosemite (10.10.2)
MacBook Air (11-inch Mid 2013), OS X Yosemite (10.10.2)
You have to supply a Firmware password: https://support.apple.com/en-us/HT204455
If you have forgotten the Firmware password: https://support.apple.com/en-us/HT203409
My macbook air keeps on showing a lock with a password after I pressed the 'Option' key to fix up the flashing folder with a question mark?