🧰 Custom Ubuntu ISO Creation with Cubic¶

Author: Shadil A.M Focus: Building a custom Ubuntu-based distribution using Cubic (Custom Ubuntu ISO Creator)

🚀 What Is Cubic?¶

Cubic (Custom Ubuntu ISO Creator) is a graphical tool for creating custom Ubuntu Live ISOs. It provides a chroot environment where you can:

• Modify packages and system files
• Pre-install applications
• Customize themes, wallpapers, and user defaults
• Tweak boot options and preseed configuration
• Build a ready-to-install ISO for distribution or deployment

In short — it’s the easiest way to remaster Ubuntu visually without terminal complexity.

🧩 What You Can Do with Cubic¶

⚙️ How to Install Cubic¶

sudo add-apt-repository ppa:cubic-wizard/release
sudo apt update
sudo apt install cubic

Launch via Applications → Cubic, or:

cubic

🧠 How the Process Works¶

1. Start Cubic

2. Choose a project directory (e.g., ~/cubic/mydistro)

3. Select a base Ubuntu ISO (e.g., ubuntu-24.04-desktop.iso)

4. Enter Chroot Environment

5. Cubic opens a terminal inside the extracted ISO filesystem

6. You can install packages, edit configs, add scripts, etc.

7. Customize and Exit

8. Modify /etc/issue, /usr/share/backgrounds/, skel/, etc.

9. Exit the terminal when done

10. ISO Settings

11. Update boot menu text, kernel options, and compression format

12. Build ISO

13. Cubic packages your customizations into a new bootable ISO

🧩 Comparison: Cubic vs Other Remaster Tools¶