YUMI (Your USB Multiboot Installer) is a popular multiboot bootable USB boot media creation tool. The purpose of this software utility is to help anyone quickly create a multi-system multibooting flash drive consisting of several different ISO files. Easily boot all of your favorite ISO and IMG files from one single USB drive or micro SD card.
Run any number of Linux live operating systems, PC diagnostic tools, free antivirus utilities, Windows PE and Windows setup installers, and more all from the same bootable USB disk!
How YUMI works
This Multisystem bootable USB media creation tool can be used to store multiple bootable ISO or Image files on one USB flash drive or (UFD). Then, during computer startup (assuming you have set your computer to boot from the flash drive), you can navigate from an organized folder structure and choose which one to boot from. Bootable distributions and tools can also be uninstalled or removed with the frontend of this tool.
What is a bootable USB?
A bootable USB is a removable storage device (typically a flash drive or micro sd card) that has been configured to USB boot from the software or operating systems stored on it, instead of an internal hard drive. Such a drive might contain system utilities used for diagnostic troubleshooting, malware and antivirus scanning, OS startup repair, etc. Or operating systems such as Linux or Windows that can be run entirely from the removable portable storage device or used as an operating system installer.
Here are some common uses for USB bootable drives:
- USB Operating System Installation: Bootable USB drives are often used to install or reinstall operating systems like Windows, macOS, Linux, or other specialized operating systems. Users can portably boot from a USB drive just as they would a Live CD or DVD, but without using a CD/DVD media. Then one can follow the same usual installation prompts to set up and install an operating system on their computer’s internal drive.
- System Recovery and Repair: USB boot from system recovery tools or system diagnostic utilities. Quickly troubleshoot and repair issues with a computer’s operating system or hardware components while running outside of the native operating environment.
- Data Recovery from USB: Can include bootable data recovery software used to recover files from a computer that won’t boot normally due to system failures or malware infections.
- Live USB Operating Systems: Certain Linux distributions offer “LiveUSB” versions that can boot from a USB drive. This allows you to run an operating system directly from a USB drive without installing it onto a computer’s hard disk. A Live Linux USB can be useful for testing or trying Linux or for using a specific Linux environment on a temporary basis.
How to Create a Bootable USB Drive
To create a bootable USB drive consisting of ISO files, you can use specialized software that copies the necessary files from the operating system or utility to the USB drive. This type of tool will also set up the drive’s boot sector so that the computer can recognize it as a bootable device. YUMI is a software utility that can automatically do all of this for you.
Keep in mind that while preparing, formatting, and making a bootable USB drive, any existing data on the drive is wiped clean and overwritten, so you will want to back up any important files you wish to keep, before proceeding. Additionally, you may need to change the boot order found in your computer’s BIOS or UEFI settings to boot from the USB drive instead of its local internal hard drive.
How can I Boot from USB?
Here are the steps to get your computer to boot from USB:
- Insert a prepared USB bootable flash drive into your computer’s USB port and then power on or restart the PC.
- During the system post, (as text starts appearing on the screen), Access BIOS or UEFI with a keyboard shortcut using a hotkey such as F2, F8, F9, F11, F12 or the Del key.
- From the list of boot devices set your USB drive to be the first boot device.
- Click Save or press F10.
- Let your system proceed to startup and boot from the USB thumb drive.
If all went well, your computer should proceed to read and execute the software stored on the bootable USB. Booting from the pendrive instead of the operating system installed on the computer’s internal hard drive.
YUMI Multiboot USB Software Variants
Over the years there have been three different variants of this popular USB boot drive creator. Here each multiboot USB software tool version is shown in order starting from the latest release.
YUMI exFAT
The YUMI exFAT multiboot USB media creation tool is the latest version and the only one actively maintained. It now uses the Ventoy bootloader, supporting both UEFI and BIOS USB booting through a secondary hidden FAT32 partition, while an exFAT partition is used to store the bootable ISO files.
YUMI UEFI
Following the Legacy release, the second iteration of YUMI UEFI was developed to accommodate both BIOS and UEFI USB boot modes, as motherboard manufacturers transitioned from BIOS to UEFI firmware. This USB boot drive creator version only supports booting from USB drives formatted with a FAT32 filesystem.
YUMI Legacy
YUMI Legacy was the initial version, supporting only BIOS USB booting and working with USB drives formatted in either NTFS or FAT32 filesystems. Originally developed in 2010, it was later made available to the public in March 2011.
Note: Going forward, only the exFAT variant is recommended, as it uses the most up to date date USB boot methods for both UEFI and BIOS. If there are specific distributions or features from other versions that you’d like to see supported, please feel free to contact me, and I’ll consider adding them. If you find YUMI helpful, please help spread the word by sharing a link back to this site with others.