What is Full Disk Encryption?

Disk encryption is a technology that protects information by converting it into an unreadable code that cannot be easily decrypted by unauthorized persons.

Disk encryption uses disk encryption software or hardware to encrypt each bit on a disk or disk volume. This is a good way to prevent unauthorized access to the data storage area.

Expressions full disk encryption (FDE) or encryption of the entire disk indicates that everything on the disk is encrypted, but that the master boot record (MBR) or similar area of a disk that can be started by the operating system boot loader, which can be started by the system, is not encrypted.

Some hardware-based full-disk encryption systems can actually encrypt the entire disk, including MBR. In addition, most software works in a structure where data is automatically encrypted or decrypted when loaded or saved.

Many FDE software and devices used today in the enterprise structure provide multi-factor authentication with pre-boot authentication, user identity, and encryption and data theft protection to ensure maximum data protection.

Operating system providers have created many products by doing this. BitLocker on Windows, FileVault on MacOS, and LUKS, which we see on most Linux systems, help us to encrypt the entire disk.

Bitlocker used by Windows is known to have vulnerabilities and its reliability is often discussed today.

At the same time, the application-based and virtual disk to create solutions that offer applications. They can create secure areas on the partition they create. VeraCrypt can be used for this job.

Advantages;

• Initially, after unlocking the computer, the end user does not need special attention.
• The data is automatically encrypted as it is written.
• When read, it is automatically decrypted.
• Your data is stored securely

Cons;

• Because everything on the hard drive, including the operating system, is encrypted, response times can be increased, especially because the data is heavily accessed.
• Encryption and decryption process is done instantly because of the increase in CPU usage may be observed.
• You may not be able to access your personal files in case of problems with the system.