It’s Fusilli Jerry.

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One of these should do what you’re looking for. Each has a slightly different approach.

https://etcher.balena.io/

https://unetbootin.github.io/

https://www.ventoy.net/en/index.html

Me-at-lo-a-f

I’ve been looking for this (with minimal effort) for years after first seeing it in the early days of the internet. Thank you for posting OP.

4.01Mb may be too small for a single block.

My first thought too. A library?

He’s not a natural born citizen of the United States of America.