


If you do go the 1 huge USB route with multiple boots, an additional downside is that multiboot fails, gets damaged, or lost, you have to spend your time again recreating it. I personally, have multiple USB's, and a spreadsheet of what is on each. Yet you take it to another machine, UEFI enabled of course, and it will boot just fine. It will return the error no bootable partition found. Sometimes you can use Yumi or Rufus to create a multipurpose UEFI and/or legacy BIOS multiboot, try to use it a UEFI enabled machine, and it will see it, and boot the ISO just fine, and sometimes it won't. The other day I created a USB with UEFI and/or legacy BIOS support for Ubuntu 20.whateverthenewestLTS is, using Rufus and Yumi, and it wouldn't display the GUI right, so I had to use one of my Ubuntu boxes to create the Livedisk from inside there, despite using the same ISO, and verifying the hash upon download. With UEFI, it further complicates things. Been doing this for years and I've had mixed results.
