YUMI exFAT

YUMI exFAT is your universal Multiboot USB bootable software installer. This Windows based USB media creation tool can be used to make a Multisystem flash drive. It is an automated USB boot creator application can help you quickly and easily create a Multisystem bootable USB flash drive containing several ISO files or images.

Use it to boot from USB your favorite Live Linux distributions, Windows setup installers, antivirus utilities, disc cloning, backup software, penetration testing utilities, diagnostic tools, and much more. Making it easy for anyone to create their own customized multi purpose bootable USB stick without the need to learn any specific terminal commands.

What is YUMI Multiboot?

YUMI is a media creation tool has been considered by many to be the best bootable USB creator software. It replaces our old Multiboot ISOS tool and is also the successor to the Universal USB Installer (UUI). Tools that were among the first ever made for the purpose of creating a bootable flash drive.

In general and for the most part, bootable ISO files are stored within the YUMI folder. This makes for a nicely organized portable Multiboot drive that can still be used for traditional storage purposes. Though originally intended to be used to boot from USB “LIVE Linux” Operating Systems and tools, using it to install Linux from a flash drive to a hard drive should also work fine with most distributions. If you do happen to find a distro where the installer does not work, please let me know. You can also use the software to create USB bootable Windows setup installers, enabling you to easily install Windows 10 from USB.

Multiboot Bootable USB Flash Drive Creation

This Multiboot USB Media Creation Tool can be used to store and run more than one distribution from your thumb drive. Enabling you to boot Multiple ISO files from the same device. Added distributions can also easily be uninstalled or removed with the tool!

You might be asking, How can I boot from USB with exFAT? For that, the specific YUMI exFAT variant was created. This Windows based media creation tool can be used to automatically create an exFAT bootable USB. It supports the exFAT format, can hold 4GB+ ISO files, allows up to 40GB persistence storage, along with the ability to BIOS and UEFI USB boot.

Supports both BIOS and UEFI USB Boot: YUMI allows you to keep using an exFAT format on your USB drive and store files larger than 4GB. Both modern UEFI and Legacy BIOS boot modes are supported. You can also optionally drag and drop bootable ISO files into folders onto your flash drive to be automatically detected and added to the boot menu at startup.

The exFAT variant utilizes a bootloader based on Ventoy2Disk along with a custom theme and configuration enabling you to use advanced Ventoy boot methods with YUMI’s helpful front end. Making it easy to discover and learn more about new distributions to download and try. Create, and manage for example; Debian and Ubuntu based distributions with persistent images, or make multiple Windows Media Installers. You can even use this software for fully installing Windows onto USB in which case each distribution is stored and booted from separate VHDx images.

It is important to note that this variant is also backwards compatible with Ventoy. In fact, if you’d like, instead of using YUMI2USB you can copy YUMI-exFAT-1.0.3.0.exe to the same location as your Ventoy2Disk.exe and the multiboot USB boot tool will autodetect and use Ventoy instead for performing installation/updates.

How the YUMI app works

Once the drive has been prepared, you can use the front end Installer to learn more about and download distributions and tools to put on a select drive. The front end will create an organized folder structure and copy each ISO to the drive for you (handy if you want the media creation tool to keep track of your installations for removal). It can also create persistent storage files for you along with related .json entries. Each Arch, Fedora, Debian or Ubuntu based distribution can have its own persistent storage.

YUMI Features:

• Official Website links are provided to help you learn more about each USB bootable distribution.
• Download links make it easy to find new ISO files to try on your bootable USB.
• Up to 40GB persistence file creation for Arch, Fedora, Ubuntu and Debian based distributions such as KALI Linux.
• Easily add or remove installed ISO distributions.
• Automatic drive preparation using a Fat32 boot partition and exFAT partition for storage.
• Optional ability to “Drag and Drop ISO files” onto USB.
• 100% Free and Open Source (version specific source code is provided upon release).

YUMI exFAT Bootable USB Flash Drive Setup

YUMI exFAT USB Boot Menu

Side Note: You can also create your own storage folders within the YUMI folder on the flash drive and then just drag and drop your ISO, IMG, WIM, VHD(x), VDI.vtoy, and EFI files into those folders. During startup, the system will add entries for discovered items. Stored files can be larger than 4GB.

YUMI exFAT Download

Updated April 3, 2025 YUMI-exFAT-1.0.3.0.exe: The tool now iterates through each drive letter and then accumulates and combines all volumes/partitions that are on the same physical disk.
Both fixed and removable disks are now displayed by default.

SHA-256: f259d5b2cbaaef9348c27a8f1fc2cd1f52646501b406048fba6ffbe002ff57c1

YUMI-exFAT-1.0.3.0.exeexFAT Source Code

BACKUP DATA: You must Backup any data you wish to keep before using the “Prepare Device” option. While preparing the drive, all existing partitions/volumes on the selected Disk, even if hidden, will be wiped clean.

YUMI exFAT Changelog

The following log outlines recent changes made to multiboot USB software. Note that only revisions over the past year are mentioned here.

• 4/3/2025 YUMI-exFAT-1.0.3.0: Update to use the Ventoy 1.1.05 bootloader to address resolution issue when booting Windows, WinPE ISO in UEFI mode.
• 12/23/2024 YUMI-exFAT-1.0.2.9: Created Penetration Testing and Tiny Linux Distros Directories. Added Void Linux, updated broken links.
• 10/4/2024 YUMI-exFAT-1.0.2.8: Allow for Unlisted .ISO or .IMG file detection under option “Try Unlisted ISO/IMG”. Improve method for detecting remaining space on drive. Return to menu instead of abort if not enough space remains on drive for the selected distro.
• 7/21/2024 YUMI-exFAT-1.0.2.7: Update to use the Ventoy 1.0.99 bootloader. Added the ability to exclude drives from detection by creating and placing a file named “excludedrive.txt” at the root of the drive.
• 5/22/2024 YUMI-exFAT-1.0.2.6: Update to use the Ventoy 1.0.98 bootloader which provides upstream support for newer KAOS and Arch Linux releases.

Essentials to create a multi system bootable USB

This USB Boot Installer will format your select drive with one exFAT and one Fat32 partition, but be aware that all existing partitions on the select disk will be deleted. You’ll want to ensure that you have made a backup of any data you want to keep before using YUMI software on any drive.

Recommended: You will have the best experience when using a fast SSD flash drive. Here is a list of suggested Best Fast Flash Drives.

• 8GB+ flash drive (128GB – 1TB size works well).
• Computer that can boot from USB.
• Windows 11, 10, 8, 7 Operating Environment.
• YUMI (to create a Multiboot Bootable USB).
• Your favorite Windows and Linux ISO Files.

Please inform me of unlisted “FREE” Live Linux distributions or version revisions, and I will attempt to update the USB Multiboot Tool to support them. Additionally, developers who wish to have their Live Linux distribution added, can direct me to a copy to try.

How to Create a MultiBoot USB Flash Drive (Windows)

1. Run* YUMI following the onscreen instructions.
2. Then, Run the tool again to Add More ISOs/Distributions to your Drive.
3. Restart your PC. But be sure to set your Boot Menu to boot from USB.
4. Select a distribution to launch. Then, boot and enjoy!

Booting from a USB Flash Drive

Here are the steps to USB Boot into any installed Operating System or Tool that you’ve previously added to your drive.

1. Accessing BIOS or UEFI Settings – Restart your computer and proceed to access your BIOS or UEFI. This is usually done by pressing F2, F12, Delete, or the Esc key. Refer to your computer or motherboard manual to find the correct key for your system.
2. Change Boot Order – In the BIOS/UEFI settings, navigate to the “Boot” or “Boot Order” section. Change the boot order so that the USB drive is the first boot option. This allows the computer to check the USB drive for bootable media before trying the internal storage.
3. Save Changes and Exit – Save the changes you made to the boot order and exit the BIOS/UEFI settings. This will restart your computer.
4. Finally, Select an OS to Boot – Your computer should now be booting from the USB drive into a Boot Menu. Simply select the Operating System or Tool you wish to boot from and then press enter. Now follow any additional prompts to make selections for custom booting.

That’s really all there is to it. If all went well, then you should be booting your favorite distributions from your custom MultiBoot USB drive!

Creating a MultiBoot Bootable USB Flash Drive (Linux)

The following instructions were performed from a running Ubuntu host. These steps assume that you have gzip and WINE packages installed on your system. If not, you’ll need to install them both before continuing.

1. Open a terminal. Ctrl+Alt+T
2. Next, cd to your desktop:

   cd Desktop

3. Download YUMI4Linux gzipped tarball using wget:

   wget https://yumiusb.com/downloads/YUMI/YUMI4Linux.tar.gz

4. Extract the archive:
   (Note: you may be able to just double click the file to extract.)

   tar xzvf YUMI4Linux.tar.gz

   Switch to the extracted folder:

   cd YUMI4Linux

   Set permissions + run the YUMI Linux shell script:

   chmod +x ./YUMI.sh && sudo ./YUMI.sh

Once the script finishes, it will launch the included YUMI-exFAT-#.exe executable file from WINE, enabling you to add bootable ISOs and create persistence files. Note that this tool will only display drives that have already been prepared with YUMI exFAT.

Distributions and tools can be added or removed at any time on prepared drives with this stand alone .exe.
To run the tool at a later time, simply execute the file using WINE as follows:

wine YUMI-exFAT*

Note: You can also copy the YUMI-exFAT-#.exe to another location and run it elsewhere, if you’d like.

How a YUMI Multisystem Bootable USB Works

YUMI (Your Universal Multiboot Installer) enables each user to create their own custom Multiboot UFD containing only the distributions they want. Presented in the order by which they are installed. A new distribution can also be added to the bootable device each time the tool is run.

If you run the tool from the same location you store ISO files, then they should be auto detected, eliminating the need to browse for each ISO.
Other Notes: If MultibootISOs or the Legacy variant was previously used, you must reformat the drive, and start over. The exFAT variant is not compatible with the older Multiboot ISO tools.

Bootable USB Distros

Here are some Bootable Live Linux Distros, Portable Operating Systems, Windows Installers, and tools that you can install and boot from USB. Keep in mind that although this list is somewhat comprehensive, it is by no means all inclusive.

Troubleshooting & Known Issues

Debian Persistence Issue

Debian requires the persistent block file and label to be named persistence (previously live-rw), and it must contain a persistence.conf file with the contents / Union. While this has been fixed in some distros like Kali Linux, official Debian still has issues detecting persistent block files and may only support persistent partitions.

Excluding a Drive from Detection

Create a blank file named excludedrive.txt and place it in the root directory of the drive you want YUMI to ignore.

ACPI=OFF ~ Disable ACPI

Boot issues on certain laptops (e.g., Lenovo Yoga) may require adding acpi=off to the boot parameters to disable ACPI and boot successfully.

My PC Won’t Boot from Flash Drive, but BIOS Supports USB Boot

This can happen if the USB drive lacks a proper partition and MBR. Always let the USB creator format and prepare your drive to ensure boot compatibility. Backup your data first.

TAILS Not Booting

If the USB is detected as a fixed drive (common with some SanDisk models), remove live-media=removable from the boot config to resolve the issue.

No Floppy Drive Detected

If you receive fd0 errors during boot, add floppy.allowed_drive_mask=0 to the append line. Alternatively, disable the floppy drive from your system BIOS.

Persistently Saving Changes

Most Ubuntu-based systems use the casper-rw persistence file. You can run multiple persistent distros, each with its own casper-rw or live-rw block file.

Adding Ophcrack Tables

Download Ophcrack tables and unzip them to F:\tables\vista_free on your USB drive. This enables table support for Windows XP through 11 using a single multiboot USB.

Final Thoughts on YUMI exFAT

YUMI exFAT stands out as one of the most versatile tools for creating a multiboot USB drive. Whether you’re installing multiple operating systems, running live Linux distributions, or carrying essential system recovery utilities, YUMI delivers a streamlined and reliable solution.

With exFAT support, the tool can handle larger ISO files and persistent storage configurations—ideal for both tech enthusiasts and IT professionals. Key features include:

• Drag-and-drop ISO support
• Compatibility with both BIOS and UEFI systems
• Seamless integration with Ventoy
• Optional persistent storage for supported distributions

As with any USB preparation, be sure to back up important data before you begin. And if you run into issues, have suggestions, or want to request support for a specific distro, feel free to contact us using the form provided.

Happy booting!