How to create a multiboot USB flash drive with Linux and Windows?

Question

linux

You need to create a bootable USB flash drive with several OS. from under Ubuntu. As I got closer to the goal, I tried many different options and, in short, everything is bad. The multisystem program easily creates a bootable flash drive with different Linux, but when it comes to Windows 10, the program simply refuses to install it because it does not know how to work with this type of iso. When I tried to install windows 7 and xp, it also didn’t work for me. The program loaded the images on the flash, but completely refused to register them in grub.cfg -> menuentry (i.e., I simply did not see the Windows images rudely). Desperate attempts to prescribe them manually also failed.
Tried running YUMI with wine. Nothing happened, because. my bios just did not see the flash drive, although there was "something" in the mbr.
Installed multiboot. He generally refused to run on my PC for no apparent reason. I did not understand the reason, I just scored and moved on.
At the very end, I tried to do everything with my own hands as described here https://losst.ru/multizagruzochnaya-fleshka-s-nesk... . Grub gladly got up on a USB flash drive, but he couldn’t find more than one secondary bootloader.
Bottom line: A bunch of articles have been rummaged both in the Russian-speaking Internet and in the English-speaking one and, as they say, by zeros.
PS You can, of course, run Windows on a virtual machine and make a USB flash drive there, but this is the most extreme option.

Answer 1

you put the DriveDroid application on a rooted android.
it allows you to boot from iso images that are on the microsd.
it is only necessary to hybridize it through the drivedroid menu.
you download any iso on the microsd - you use it.
and you can’t get hemorrhoids with troubles in the menus, it’s rude and others like them.

Answer 2

Under Windows there is a chic utility: MultiBoot USB - Multiboot flash drive - it puts a universal bootloader on the USB flash drive, which is done once. It also allows you to copy the contents of the OS distribution kit to a USB flash drive and start the installation from the menu. But the most important are these two killer features:

• The menu itself is in a text file and is easily editable
  
• In the menu, you can specify the path to the bootable ISO file on the USB flash drive
  

Answer 3

https://alternativeto.net/software/multibootisos/?...