Why is everyone suggesting ventoy and stuff and no one is telling you to just reformat drives you no longer need? Or are they all live OSs in use? Am I missing something?
I mean, they clearly already know how to do a fresh image of a live OS on a USB key. But the number of keys involved sounds like they don't know you only need one.
I know my use case isn't the standard for everyone, but at this moment I have six different Linux distros in use. I keep my most commonly used ISOs on a Ventoy so I can easily install an OS on a machine I'm rehabilitating, or maybe just because I want a change of pace. I could write the ISO I want to the drive every time I want to change something, but it's a waste of time when I can have 15 or 20 of them ready to go on one drive. It's just my particular use case, I'm sure others have other reasons they prefer it.