UUI - Universal USB Installer is a free, open source bootable USB creator for Windows that lets you build a Live USB drive from virtually any Linux distribution, Windows installer, antivirus rescue disk, or system utility ISO. With a simple three-step process - select a distro, choose your ISO, pick your USB drive - you can have a bootable flash drive ready in minutes, no technical knowledge required.
Quick answer: Download UUI, run the executable (no installation needed), select your distribution and ISO file, choose your USB drive, and click Create. The tool handles formatting, bootloader setup, and file copying automatically. Optional persistence lets you save files and settings between reboots on supported Linux distributions.
Universal USB Installer (UUI) | USB Boot Maker
UUI is ideal for anyone who wants to run Linux from a USB drive without touching their internal hard disk, test distros before committing to a full install, create a Windows installer USB, or build a portable system recovery toolkit. It supports both legacy BIOS and UEFI boot, and as of version 2.0.2.3, uses the Ventoy bootloader internally - enabling flexible multi-ISO compatibility and improved UEFI support without requiring repeated reformatting.
The tool is fully portable: no installation is required. Just run the executable from wherever you extracted it, including from another USB drive.
Top Features of Universal USB Installer (UUI)
- Extensive Linux Distribution Support: Create a bootable Linux USB drive on Windows for distros including Ubuntu, Fedora, Kali, Debian, Linux Mint, Arch, Manjaro, and hundreds more. Also supports multiboot ISO tools and system repair utilities.
- Simple Three-Step Interface: Even beginners can make a Live Linux USB drive in just minutes using UUI's straightforward selection process.
- Built-in Download Links: The tool provides official download links for Linux ISOs, antivirus rescue disks, and utilities so you can get the files you need directly from trusted sources.
- Integrated USB Formatting: Includes a built-in formatting option using the FAT32 Formatter to prepare your drive to boot from USB, even if it is larger than 32 GB. Starting with version 2.0.1.6, the default filesystem is exFAT, removing the 4 GB file size limit.
- Persistent Storage Support: Enables Live USB persistence for supported distributions, allowing you to save files and settings between reboots - compatible with Ubuntu, Debian, Arch-based distros, and others. Supports up to 40 GB of persistence space.
- Windows USB Installer Capability: Use it to install Windows from USB - ideal for systems without CD/DVD drives or when performing fresh installs of Windows 10 or 11.
- Boot Antivirus and Recovery Tools: Supports ISO files from Bitdefender, Kaspersky, AVG, and other system utilities for creating bootable system rescue USBs.
- Windows To Go Support: Create a portable Windows OS on a USB drive with full boot functionality - useful for technicians and mobile professionals.
- Drag-and-Drop ISO Support: Drop additional ISO, IMG, WIM, VHD(x), or EFI files directly onto the UUI folder on your flash drive to add them without relaunching the tool. Boot menu entries are populated automatically on startup.
- Secure Boot Support: Supported via the VTOYEFI option - enroll the included key in MokManager during startup to enable Secure Boot compatibility.
- Fully Portable Application: No installation required. Runs directly from any location, including from another USB drive.
Why Use UUI as Your Bootable USB Tool?
Whether you are a Linux enthusiast, IT technician, or first-time user, UUI is a strong choice when you need to create a bootable USB drive for Linux or Windows. It balances ease of use with genuine capability - supporting a wider range of ISOs, offering persistent storage, and now using the Ventoy bootloader internally for better UEFI and multi-ISO compatibility.
UUI is one of the most downloaded and longest-running tools in this category, first released in 2009 and still actively maintained. The current version as of June 2026 is 2.0.3.7, with continued updates to distro compatibility and bootloader support.
How to Use Universal USB Installer
Follow these steps to create a bootable USB flash drive using UUI:
- Download UUI: Visit the official download page and get the latest version.
- Launch the Tool: No installation needed - just double-click
Universal-USB-Installer.exe. - Select USB Drive: Choose your USB flash drive from the dropdown list.
- Select Distribution: Pick the Linux distro, Windows version, antivirus utility, or tool you want to make bootable.
- Browse for ISO: Select the ISO file from your local system, or use the built-in download link for the selected distro.
- Set Persistence (Optional): For Linux distributions that support it, use the slider to allocate space for saving files and settings between reboots.
- Click Create: Let the program build the bootable USB drive. A progress bar shows the status.
- Reboot and Boot from USB: Restart your PC and select the USB device as the boot source from your BIOS or boot menu (usually accessed with F12, F2, or Delete during startup).
Note: A USB drive of at least 8 GB is recommended for most modern Linux distributions. The drive will be formatted during the process, so back up any existing data first.
Universal USB Installer Specs and Download
- Author's Website: USB Boot - Make USB Drives Bootable
- Developer: Pendrive Linux
- First Release: 2009
- Current Version: 2.0.3.7 (June 2026)
- File Size: Legacy: 1+ MB | exFAT Version: 18+ MB
- License: Open Source
- Rating: 5 Star
- OS Compatibility: Windows 11, 10, 8, and Linux (via WINE)
- Category: Bootable USB Software, Portable Utilities
- Download UUI: Download Universal USB Installer
Note: For creating a multiboot USB with multiple ISOs on a single drive, check out YUMI - Your Universal Multiboot Installer, which offers even more advanced USB boot capabilities including dynamic ISO management without rebuilding the drive.
USB Bootable Tool Comparison: UUI vs YUMI vs Rufus vs Ventoy
| Feature | UUI | YUMI | Rufus | Ventoy |
|---|---|---|---|---|
| Multiboot Support | Yes (v2.0+ with Ventoy bootloader) | Yes | No | Yes |
| Persistent Storage Support | Yes (up to 40 GB) | Yes | Yes (limited to Debian/Ubuntu) | Yes (with plugin) |
| Supported ISO Types | Linux, Windows, Rescue Tools, IMG, WIM, VHD | Linux, Windows, Rescue Tools | Linux, Windows | Any ISO (auto-detection) |
| Secure Boot Support | Yes (via VTOYEFI) | Yes | Yes | Yes |
| Ease of Use | Beginner | Beginner to Intermediate | Intermediate | Beginner (drag and drop only) |
| Requires Rebuilding USB to Add ISOs? | No (drag and drop supported) | No | Yes | No |
| Installation Needed | No | No | No | No |
| Open Source | Yes | Yes | Yes | Yes |
| Best Use Case | Live Linux USB, multiboot toolkit, persistent installs | Multiboot USB with multiple tools | Fast single-ISO flashing for installs | Flexible ISO testing and multiboot |
Frequently Asked Questions
What is Universal USB Installer and what does it do?
Universal USB Installer (UUI) is a free, open source Windows application that creates bootable USB drives from ISO files. It supports Linux distributions, Windows installers, antivirus rescue tools, and system utilities. You select a distro, choose your ISO, pick your USB drive, and click Create. The tool handles formatting, bootloader setup, and file copying automatically.
Does Universal USB Installer support UEFI and Secure Boot?
Yes. Since version 2.0.2.3, UUI uses the Ventoy bootloader internally, which provides UEFI and Secure Boot support. To enable Secure Boot compatibility, select the VTOYEFI option during startup and enroll the included key using MokManager.
What is Live USB persistence and which distros support it?
Persistence lets you save files, settings, and installed packages to your USB drive so they are available the next time you boot. UUI supports this for distributions that use Casper or similar systems, including Ubuntu, Debian, and most Arch-based distros. You can allocate up to 40 GB of persistence space. exFAT formatting (the default from v2.0.1.6) removes the previous 4 GB casper-rw file size limit.
Can I add multiple ISOs to one USB drive without reformatting?
Yes. You can drag and drop additional ISO, IMG, WIM, VHD/VHDX, or EFI files onto the UUI folder on your flash drive. Boot menu entries are populated automatically on the next startup. Note that drag-and-drop additions are not tracked by UUI for easy removal later.
What USB drive size do I need?
A minimum of 4 GB is required for lightweight distributions, but 8 GB or more is recommended for most modern Linux ISOs. For multiboot setups or persistent installs, 16 GB or larger is ideal.
Does UUI work on Windows 11?
Yes. UUI is compatible with Windows 11, 10, and 8. Run it as Administrator if you encounter permission errors when writing to the USB drive.
What is the difference between UUI and YUMI?
Both are developed by Pendrive Linux. UUI is focused on single-distro bootable USB creation with optional persistence, and now supports multiboot via drag-and-drop with the Ventoy bootloader. YUMI is purpose-built for multiboot USB drives and offers more streamlined management of multiple ISOs, including a dedicated removal tool for each installed distro.
What is the difference between UUI and Rufus?
Rufus is faster for single-ISO flashing and offers more control over partition scheme and filesystem options, making it better suited for Windows installers and users who need GPT/MBR flexibility. UUI supports a much wider range of Linux distributions natively, includes built-in download links, supports persistence, and is better suited for Live Linux setups and multiboot toolkits.
Can I use UUI to create a Windows 11 bootable USB?
Yes. UUI supports creating Windows 10 and Windows 11 installation USB drives, as well as Windows To Go drives for running Windows portably from the USB itself.
Final Thoughts on Universal USB Installer
Universal USB Installer remains one of the most trusted and widely used bootable USB creators available. Its user-friendly interface, extensive distro support, persistent storage, Secure Boot compatibility, and no-install portability make it a go-to choice for Linux enthusiasts, IT professionals, and everyday users alike. The adoption of the Ventoy bootloader in recent versions has significantly improved multi-ISO and UEFI support, keeping UUI competitive with newer tools.
Whether you are setting up a Live Linux environment for testing, creating a Windows installer USB, building a portable system recovery toolkit, or running antivirus rescue tools, UUI handles the job reliably. For multiboot setups where you need to manage and remove individual ISOs, YUMI remains the stronger specialized option.