Ubuntu with Disk Encryption

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Ubuntu with Disk Encryption

Overview

Ubuntu supports full-disk encryption during installation, protecting data at rest with LUKS (Linux Unified Key Setup). This ensures only authorized users with the encryption passphrase can access system data.

Prerequisites

• Ubuntu ISO (latest LTS recommended, e.g., 22.04).
• Bootable USB installer.
• Backup of important data.

Steps

1. Download Ubuntu ISO

• Get from official Ubuntu download page.
• Create bootable USB with Rufus (Windows) or Startup Disk Creator (Linux).

2. Boot from Installation Media

• Insert USB and reboot system.
• Select Try or Install Ubuntu.

3. Start Installation

• Click Install Ubuntu.
• Select keyboard layout.

4. Configure Installation Options

• Recommended:
  • Normal installation
  • Install third-party software

5. Select Installation Type

• Choose: Erase disk and install Ubuntu.
• Enable: Encrypt the new Ubuntu installation for security.

6. Set Encryption Options

• Enter strong encryption passphrase.
• Optional: enable secure erase.
• Choose LVM for flexible partitioning.

7. Complete Installation

• Select time zone.
• Create a user account.
• Wait for installation to complete and restart.

8. Boot with Encryption

• On restart, system prompts for encryption passphrase.
• After entry, Ubuntu boots normally.

Notes

• Disk encryption is irreversible without reinstalling.
• Backup data before installation.
• Modern CPUs minimize encryption performance impact.
• Recommended for laptops, mobile workers, and sensitive environments.

Screenshots (Optional)

• File:Ubuntu-Encryption-Install.png
• File:Ubuntu-Encryption-Options.png
• File:Ubuntu-Encryption-Passphrase.png
• File:Ubuntu-Encryption-Boot.png

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