How to Dual Boot Ubuntu 26.04 LTS with Windows 11 | Full Step-by-Step Guide

Want to use Linux and Windows on the same PC? In this complete step-by-step guide, I'll show you how to safely install Ubuntu 26.04 LTS alongside Windows 11 using Dual Boot. Dual booting gives you the flexibility of Linux for coding, software development, and full system control—while keeping Windows 11 for gaming, Adobe apps, and daily productivity. We cover everything from downloading the official Ubuntu ISO and flashing a bootable USB with Rufus, to shrinking disk space in Windows, configuring BIOS/UEFI, manual partitioning, and verifying the GRUB bootloader. By the end of this video, you'll seamlessly choose between Windows 11 and Ubuntu every time you power on your PC. ⚠️ IMPORTANT SAFETY NOTE: Always back up your important data before modifying disk partitions or installing an operating system. Double-check your drive and partition selections during the installation setup. ━━━━━━━━━━━━━━━━━━━━━ ⏱️ CHAPTERS / TIMESTAMPS ━━━━━━━━━━━━━━━━━━━━━ 00:00 Introduction & Prerequisites 00:23 Downloading Ubuntu 26.04 LTS Desktop ISO 01:29 Rufus Setup & Requirements 02:28 Flashing the USB Drive (GPT vs MBR Scheme) 04:11 Shrinking Disk Space in Windows (Disk Management) 05:27 BIOS / UEFI Boot Menu Settings 06:38 Ubuntu Installer: Language, Keyboard & Wi-Fi 07:37 Selecting Installation Type 08:08 Manual Partitioning (Root "/", Swap & EFI) 10:35 Creating User Account & Timezone 11:09 Review & Final Installation 12:00 First Boot into GRUB & Testing Ubuntu 13:34 Rebooting & Verifying Windows 11 14:13 Post-Install Tips & Wrap-Up ━━━━━━━━━━━━━━━━━━━━━ 📌 USEFUL TIPS & BOOT KEYS ━━━━━━━━━━━━━━━━━━━━━ • Required Tools: Official Ubuntu Desktop ISO & Rufus Portable (search via official websites) • Disk Calculation: 1 GB = 1024 MB (e.g., 200 GB = 204,800 MB) Common Boot Menu Keys: • ASUS: F8 or Esc • Dell: F12 • HP: F9 or Esc • Lenovo: F12 or Fn+F12 • MSI / Acer / Gigabyte: F12 or F11 ━━━━━━━━━━━━━━━━━━━━━ 💬 SUPPORT & COMMUNITY ━━━━━━━━━━━━━━━━━━━━━ Got stuck on partition setup or entering your boot menu? Leave a comment with your PC or motherboard model below—I'd be happy to help you troubleshoot! If this tutorial helped you, please consider hitting the 👍 LIKE button and SUBSCRIBING to SamanX Dev for more Linux, Windows, development, and practical tech tutorials. #Ubuntu #DualBoot #Windows11 #Linux #Ubuntu2604 #LinuxTutorial #SamanXDev