Edit: After half day, my wife’s Mac started having the same problem. I have then applied the solution that I found in the Apple
Encrypt The Startup Disk On Your Mac With FileVault 2
There are several ways through which a disk can be encrypted on a Mac operating system. But very few people are aware of the fact that even a startup disk can be encrypted and this feature was enabled after the release of Mac OS X Lion. Apple has worked hard to make it ways for its users to encrypt their Mac’s hard drive. If you are thinking how quick and how fast this encryption process can be, than continue reading this article after which the process will come out to be crystal clear.
Before starting, it should be mentioned that the fast, quick and easy process depends upon the configuration of the Mac operating system. It is obvious that any Mac system which is in a solid and stable condition will perform this process very fast. A Mac operating system when combined with an added protection of a full disk encryption from the application of FileVault 2 is worth giving a try.
Below mentioned are steps which when followed will turn on disk encryption on your system running the Mac OS X:
- Open System Preferences and then select Security and Privacy.
- Unlock the preferences of the Security and Privacy option by clicking on the lock button placed on the bottom left hand side in the corner. The system will prompt for a password of the administrator account.
- Click onto the tab of the FileVault.
- Click on the option of Turn on FileVault.
- A recovery key will be displayed on the screen. Take note of it and place in a safe and secure place.
- A window will appear on the screen which will prompt the user to decide whether the user wants to store the recovery key with Apple or not. Many people recommend to not to go with this option as the user can have complete control for any recoveries in the future. This is the reason why the recovery key is very important and should be kept safely.
- The application will prompt for the Mac to restart which can be done by the Restart button provided.
- Log again onto your Mac operating system.
This is the point where your full disk encryption will take place while you can perform other tasks on your Mac. Moreover, if you want to check for its status on a regular basis, this can be easily done from the System and Preferences panel. The status of the process will be displayed which is also inclusive of the estimated time that is left in the completion of the process.
There are few points which should be noted about the entire process.
If the user has selected the option of Storing the Recovery Key with Apple, the application will prompt to the user to setup three security questions. It is very important that you know and memorize the answers of these questions as in the either case even Apple will not be able to help out the user with the recovery process. Moreover, there is another mentioning through this process which is the possibility that any type of charges will be applied and something related to the supporting to the eligibility aspect. This aspect most probably means that if you do not have the support of AppleCare, you might be requested to pay for the service. On the other hand, if In the encryption process, the user selects for the option of encryption on the startup disk, it will always be free of cost.
another aspect of this process is that if the user holds multiple accounts on the Mac operating system, the application might prompt for those accounts which are allowed to take a startup on the system. soon after the encryption configuration has taken place, the startup screen will be changed noticeably. the reason is that now the Mac system is using a new trick to provide safety to the operating system and the trick is that it uses the recovery HD partition so as to perform the initial booting process after which it starts to verify the log in section and then completes the startup procedure by making use of the encrypted disk. the process is really clear, transparent and slick.