How to Install Ubuntu: A Step-by-Step Beginner's Guide

Getting Started with Ubuntu Linux

What is Ubuntu and Why Choose It?

Ubuntu is a free, open‑source operating system built on the Linux kernel. It supplies a ready‑to‑use desktop environment, a massive software catalog, and long‑term security updates. For users who want an alternative to Windows or macOS without paying licensing fees, Ubuntu offers a modern desktop, excellent hardware support, and a community that answers questions 24/7.

Ubuntu = a Debian‑based Linux distribution maintained by Canonical Ltd., featuring the GNOME desktop, Snap packaging, and five‑year LTS support cycles.

Choosing the Right Version: LTS vs. Interim Releases

Ubuntu follows a year.month naming scheme. LTS (Long Term Support) releases appear every two years (e.g., 22.04, 24.04) and receive security patches for five years. Interim releases arrive every six months, bring newer software, but are supported for only nine months.

For most beginners and production machines, the 2024 LTS version 24.04 “Noble Numbat” is the safest choice. Power users who need the latest kernel or desktop features may experiment with the latest interim build (e.g., 26.04, expected in April 2026).

Prerequisites: What You Need Before Installation

Minimum Hardware Requirements

• CPU: 2 GHz dual‑core (Intel i3/AMD Ryzen 3 or better)
• RAM: 4 GB minimum (8 GB recommended for smooth multitasking)
• Disk: 25 GB free space (50 GB+ for dual‑boot or heavy use)
• Graphics: 1024×768 resolution or higher; modern GPUs work out of the box with open‑source drivers
• Network: Ethernet or Wi‑Fi (Broadcom/Realtek may need proprietary firmware)

Creating a Bootable USB Drive

Download the official Ubuntu 24.04 ISO from ubuntu.com. Verify its integrity:

wget -O ubuntu-24.04.iso https://releases.ubuntu.com/24.04/ubuntu-24.04-desktop-amd64.iso
sha256sum ubuntu-24.04.iso
# Compare the printed checksum with the value on the download page

Use one of the following tools:

• Rufus (Windows) – simple UI, supports UEFI/GPT.
• balenaEtcher (cross‑platform) – writes ISO reliably, no extra options.
• Ventoy (advanced) – lets you store multiple ISOs on a single USB; ideal for testing different Ubuntu flavors.

Backing Up Your Important Data

Before touching any disk, create a full backup. For Windows users, a system image via Backup and Restore (Windows 7) or a third‑party tool like Macrium Reflect works well. Store the backup on an external SSD or cloud storage. If you plan to dual‑boot, also disable Fast Startup and suspend BitLocker to avoid hidden locks on the NTFS partition.

Step-by-Step Ubuntu Installation Walkthrough

Booting from the USB Installation Media

1. Insert the USB stick and restart the computer.
2. Enter the firmware setup (usually F2, Delete, or Esc).
3. Set the boot mode to UEFI (disable Legacy/CSM for modern PCs).
4. Place the USB device at the top of the boot order and save.
5. The Ubuntu installer will appear; choose “Try Ubuntu” first to test hardware compatibility.

Navigating the Welcome Screen and Language Settings

The live environment loads a clean GNOME desktop. Click the “Install Ubuntu” icon on the desktop. The first screen asks for language—pick the one you’re comfortable with and click “Continue”.

Keyboard Layout and Network Configuration

Select your keyboard layout (most users keep the default). If you have an Ethernet cable, the installer will auto‑detect the network. For Wi‑Fi, click the network icon in the top‑right corner, choose your SSID, and enter the password. If the Wi‑Fi driver is missing, enable “Install third‑party software” later (it pulls the necessary firmware).

Installation Type: Erase Disk vs. Something Else (Manual Partitioning)

Four scenarios are common:

• Erase disk and install Ubuntu – best for brand‑new machines or when you don’t need existing data.
• Install Ubuntu alongside Windows – the installer automatically shrinks the Windows partition.
• Something else – manual partitioning; gives you full control over sizes and mount points.
• Advanced: LVM or encrypted LVM – adds logical volume management or full‑disk encryption.

For dual‑boot, we recommend “Something else”. Follow these steps:

1. Select the free space (at least 30 GB) you created by shrinking Windows.
2. Create a EFI System Partition (ESP) – 512 MB, FAT32, mount point /boot/efi.
3. Create a swap partition – size = RAM (or 2 GB minimum).
4. Create a / (root) partition – 25 GB+, ext4, mount point /.
5. Optionally create a separate /home partition – remaining space, ext4, mount point /home.
6. Ensure the bootloader is set to the same disk that holds the ESP (usually /dev/sda).
7. Click “Install Now” and confirm the changes.

Setting Up Your User Account and Time Zone

Select your region on the map, then choose a time zone. Enter your name, a computer name, a username, and a strong password. The installer also asks whether to log in automatically; for security, leave this unchecked.

Completing the Installation and First Reboot

After copying files (usually 10–20 minutes), the installer prompts a reboot. Remove the USB stick when instructed. The system will boot into GRUB, showing entries for Ubuntu and Windows (if dual‑boot). Choose Ubuntu to finish the first login.

Post-Installation Best Practices

Updating the System and Drivers

Open a terminal (Ctrl + Alt + T) and run the following commands immediately:

sudo apt update && sudo apt upgrade -y
sudo snap refresh
sudo fwupdmgr get-updates && sudo fwupdmgr install -y

This pulls the latest security patches, updates Snap packages, and applies any firmware upgrades (e.g., BIOS, SSD microcode).

Installing Essential Software and Codecs

During installation, tick the “Install third‑party software” box. That step pulls in:

• MP3, AAC, and DVD playback codecs.
• Proprietary NVIDIA/AMD graphics drivers (if detected).
• Wi‑Fi firmware for Broadcom/Realtek chips.

After reboot, you may still want a few extra packages:

sudo apt install build-essential git curl
sudo apt install vlc gimp libreoffice

Customizing the GNOME Desktop Environment

GNOME is flexible. Use the “Settings” app to change themes, enable night‑light, and configure extensions via extensions.gnome.org. Popular extensions for beginners:

• Dash to Dock – turns the left‑hand dock into a Windows‑style taskbar.
• User Themes – lets you apply custom Shell themes.
• Clipboard Indicator – quick access to recent clipboard entries.

Common Installation Mistakes and Troubleshooting

Fixing “Secure Boot” Errors

Ubuntu boots with Secure Boot enabled, but third‑party drivers (e.g., NVIDIA) may be blocked. If you see a “MOK is required” prompt, follow these steps:

1. When the installer finishes, choose “Enroll MOK”.
2. Enter the password you set during driver installation.
3. Reboot; Ubuntu should load the signed driver.

If problems persist, temporarily disable Secure Boot in the firmware, install the driver, then re‑enable it.

Resolving Wi‑Fi Driver Issues

Broadcom chipsets often need the bcmwl-kernel-source package. Connect via Ethernet, then run:

sudo apt update
sudo apt install bcmwl-kernel-source
sudo reboot

If Secure Boot blocks the module, repeat the MOK enrollment process described above.

What to Do if the USB Isn't Recognized

Possible causes:

• USB port is in Legacy USB mode – switch to USB 3.0 or enable “XHCI Hand-off”.
• Incorrect boot mode – ensure the firmware is set to UEFI when the ISO is UEFI‑compatible.
• Faulty USB stick – try a different drive or recreate the media with Ventoy.

Which Ubuntu Setup is Right for You?

Choose a configuration that matches your daily workflow, hardware budget, and willingness to tinker.

Final Verdict: Is Ubuntu the Right OS for You?

Ubuntu balances ease of use, strong community support, and enterprise‑grade stability. If you value a free, regularly updated desktop that works on everything from a low‑end netbook to a high‑end workstation, Ubuntu is a solid pick. Developers benefit from built‑in tools, students appreciate the familiar GNOME interface, and power users can fine‑tune partitions and encryption to their liking.

Choose the installation path that mirrors your current workflow—single‑boot for a clean slate, dual‑boot for cross‑platform flexibility, or a virtual machine for risk‑free experimentation. With the steps outlined above, you’ll have a fully functional Ubuntu system ready for daily tasks, coding, media creation, and beyond.