UNetbootin vs YUMI

UNetbootin creates bootable Live USB drives for Ubuntu and other Linux distributions, allowing installation without burning a CD. It can download a supported distribution or use a Linux ISO already on the computer, and the listed targets are a USB drive or hard disk. Built-in downloads include Ubuntu, Debian, Fedora, Arch Linux, Linux Mint, and FreeBSD, as well as system utilities such as Parted Magic and SystemRescueCD. The site says most Linux ISO files should work, though some require extra boot options or changes, and some cannot boot from USB as-is. Non-Linux operating system ISOs should not be expected to work because they use a different boot mechanism. UNetbootin is available for Linux, macOS, and Windows, and is free; donations are accepted. The source code is available on GitHub under GNU GPL Version 2 or above. Linux download options include an Ubuntu PPA, 32-bit and 64-bit binaries, packages for several distributions, and source code.

YUMI creates multiboot USB drives that can contain multiple operating systems, installers, rescue disks, antivirus tools, and diagnostics. It supports UEFI and legacy BIOS systems. Supported Linux distributions can preserve files, settings, and installed packages across reboots, and ISO files can be added or removed without reformatting the entire drive. YUMI Py is a Python rewrite that runs natively on Windows and Linux. It can test installed images with portable QEMU, test complete USB drives with VirtualBox, and stream an installed ISO to another device on a local network through a browser. That LAN Share feature has no login or access code and is intended only for trusted networks. YUMI Py requires Windows 10 or 11 or a modern 64-bit Linux distribution, an exFAT-capable USB drive, and administrator or root privileges. Preparing a drive can erase existing data, so the maker instructs users to back up files first. YUMI exFAT is described as free and open source, with source code included in released versions; it supports persistent storage up to 40GB for supported distributions. YUMI is free and supports Windows and Linux.