If you own a modern Mac with a T2 Security Chip (2018–2020) or an Apple Silicon chip, the security is significantly tighter.
If you’ve ever encountered a grey screen with a padlock icon while trying to boot your Mac from an external drive or enter Recovery Mode, you’ve hit the . remove efi password
If you're unable to access the EFI settings or if the password is not removable through the settings, you can use a third-party tool such as: If you own a modern Mac with a
Many laptops have a master password generator based on the "Hash" code displayed after 3 wrong attempts. remove efi password