USB Multiboot 2014 KUDOS Rescue - 840MB Puppy Hirens MiniToo | 845 MB Uses PendriveLinux YUMI to create the basic bootable USB file structure. From the Click-START (or Click-START-WinXP) menu, you will use YUMI only once to format the USB flash drive and install "Try Unlisted ISO (Grub)" a single file empty.iso on the USB drive. After that, you will not need to use YUMI again. The real Linux and Tools distros will be installed on USB from the Click-START menu using a single 850MB self-extracting file.