Samsung NX30 ユーザーズマニュアル

Before activating the booting password, the supervisor password must have 
been configured.

Set the Password on boot option to [Enabled]. 
From now on, system booting will not proceed without the password.

1. On the password to delete, press <Enter>. (e.g. supervisor password)
2. Enter the current configured password, and press <Enter>.
3. Leave the 'Enter New Password' and 'Confirm New Password' field empty, and 

press <Enter> to deactivate the password.