The Easy2boot tools is super great, the official web site is ... :(
Anyway, Easy2boot makes it very easy to have multi-bootable USB / pen-drive for several ISO's.
A big pen-drive.
Tip of space usage:
- Easy2boot itself: 0.6 GB.
- ISO's: x GB + y GB + ...
- Space for defregment: > max(x, y, ...) (After putting everything, the left free space should be bigger than the biggest ISO file.)
Close anti-vir soft.
MAKE_E2B_USB_DRIVE (run as admin).cmd.
For options, we only need to choose the right pen-drive.
Use "Enter" for other options (using default).
Copy ISO files to the corresponding folder.
QEMU_MENU_TEST (run as admin).cmd.
Tip for win:
Choco means to install updates during installation, which requires internet.