https://www.pendrivelinux.com/xboot-multiboot-iso-usb-creator/


XBOOT – Multiboot ISO USB Creator (Windows)

XBOOT is yet another neat little Multiboot ISO USB Creator. It is a Windows based application that can be used to create a Live Multiboot USB or even a Multiboot ISO file that can then be burnt to a CD/DVD. XBOOT supports many Linux Distributions and Utilities, and allows you to use your choice of a Grub or Syslinux bootloader. Also included is a built in QEMU emulator (enabling you to boot an ISO from within Windows).

Usage Example: Creating a Live Multiboot USB with XBOOT:

Download, extract and run the latest version of XBOOT
(1) Drag and drop some ISOs into the XBOOT window
(2) Select Create USB XBOOT - Drag and Drop ISOs - Create USB
(3) Select your USB Drive from the Droplist
(4) Select a Bootloader to use
(5) Click OK to begin creation XBOOT - Select USB Drive - Bootloader - Create

A copy notification window appears to keep you informed of the progress. Once the process is complete, you should have a Bootable Multiboot USB Flash Drive with your ISO selections installed. 

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Authors Website: http://sites.google.com/site/shamurxboot/


Guide lines for using XBoot



1)   This software requires .NET framework vs 4 so install it before using this software. 
       you can download .NET framework vs 4 from here:.NET framework vs 4

2)    If you are creating Multiboot USB :
a) FAT32 is the highly recommended file-system format for Creating Multiboot USB. FAT32 is supported by 
     all ISO files while same cannot be said about other formats like NTFS etc.
     Caution:
   If you are using NTFS format then be careful Some linux distros don't support booting from NTFS      
   partitions.So NTFS is not a good choice for multibooting. Also XBOOT will not check if a particular iso
   file supports booting from NTFS partition or not , that should be taken care by the user.To be on safe 
   avoid NTFS and always use FAT32.
    
      If you are worried about the size limitation of FAT32 partition , and wants large partition size , then 
      please use RPprepUSB tool . It can create FAT32 partitions up to 2TB as mentioned by the Author of 
      this software.
View Poststeve6375, on Dec 9 2010, 02:53 PM, said:

FYI - RMPrepUSB can format a 64GB FAT32 drive, it has no FAT32 size limitation (up to 2TB I think but never tested!)

b)  For USB device USB-HDD is the recomended format, though others( USB-FDD ,USB-ZIP) are supported too.


3)   Sometimes Multiboot USB\ISO doesn't work on vmware, virtualbox, qemu etc. but works on real PC. So If you
       are testing Multiboot USB\ISO on vmware,virtualbox, qemu etc. and it didn't boot .Then please do check it
       again on Real PC.

4)   Only Supported ISO file will works.
      Some ISO files which are not supported can be added using Grub4dos ISO Emulation
      Go to page Tips & Tricks for further details.

       NOTE: Windows XP, VISTA ,7  install Disks are not supported.So do not try to add them.

5)   There will be some minor glitches so be patient and report them here . I will fix them ASAP.