One of the best security module feature of Apple’s iCloud service in Mac OS X is its lock option,which allows you to remotely set four digit PIN for your Macbook through iCloud Find My iPhone service, and require that it be entered to boot the system but what if we forget the four digit PIN,we can’t access the Macbook on such situation this guide will surely helps you to get the four digit PIN,This situation is also called iCloud lock,This lock is similar to a firmware password for securing Mac systems.In this situation our drive get lock so we can’t able enter into the system its like Administrator account on windows system if we forget it then we have to reinstall the Windows.
How to remove iCloud lock on MAC
Solution: Mount the locked drive on windows machine& find the PIN then re-install the locked drive into the original Mac & enter the PIN.
Method to get four Digit PIN
2:-Screw driver to disassemble the Mac Or CPU of Windows machine
3:-If you’re Mac machine then download and ShowAllFiles
3: Once System is booted from the alternate system, locate your locked drive.
Note:-Following guide is just for a information purpose and tested on Macbook Early 2008 Vintage model which Belongs to Me and If this Guide will not help you then take your Mac book to Apple Care but if your Mac book is in warranty then avoid to do it by this method it will break your Apple warranty