Securing your system with LUKS full disk encryption
LUKS is the standard for full disk encryption on Linux systems, including Ubuntu. It provides a robust and reliable way to protect your hard drive or SSD, ensuring that all your data remains confidential even if your device is lost or stolen.
How LUKS works
LUKS encrypts your disk at the block level, meaning every bit of data on the drive is transformed into unreadable ciphertext (scrambled data). You must provide the correct passphrase during system startup to access the data. This passphrase unlocks the encryption key, allowing the system to decrypt the data on the fly as you use it.
LUKS during Ubuntu installation
The easiest way to use LUKS full disk encryption is to choose it during the installation.
On the installer’s Disk setup page, select Advanced features. This dialog will allow you to choose several options to encrypt the disk. Choose the Use LVM and encryption option for LUKS, as shown in Figure...
