unetbootin VS batocera.linux

format your USB drive and then you can retry with your software again, or you can try with a piece of software I know works successfully. https://unetbootin.github.io/

Linux on a USB large enough to hold your files. Linux does not care what OS made the file. You mat be able to Boot from the USB. Access the BIOS and try it. UNetbootin can also be used to load various system utilities. https://unetbootin.github.io/

I think UNetbootin could create a bootable installer directly from your current drive.

This is what you want. Bootcamp is the old way to do it. You want to use This for making a usb

use rufus or unetbootin to make setup the drive

You want to test out? Get a live image. You can put it on a bootable flash drive, too (e.g., unetbootin). Changes to the computer then require your explicit consent. (If the Ubuntu partition is encrypted, you might not access the data from an other Linux except with the credentials, though.)

I have sometimes had problems with ubuntus and mints image writer. I have found the dd method to be more effective. Since the dd command has the potential to be dangerous you really want to make sure that the usb destination location is correct. dd will write over any drive you tell it to indiscriminately! If the dd option is not something you feel comfortable with there are other options as there are other live usb image writers out there for linux. I have used and liked unetbootin

& here's their official website

The OS you probably want is Batocera. I have a couple external SSDs that I use to run it on my VCSs, and they're great. It's definitely an easier setup than Windows with Launchbox, and you don't have to deal with licensing, forced updates, and all the other Windows garbage.

This subreddit is for the completely free and open-source distribution that you would find at https://batocera.org/ which comes with absolutely no copyrighted ROMs(games). You will only get support here for that and that alone. Unfortunately if you bought a preconfigured system ("unofficial image"), your issues are with the people who sold it to you. Nobody here can help you with anything outside the scope of the official release of Batocera. Which does have thorough documentation; https://wiki.batocera.org/

You made this post on the Github as the bug report, right? https://github.com/batocera-linux/batocera.linux/issues/8905

This is the only issue I could find and says it has been fixed a few weeks back. https://github.com/batocera-linux/batocera.linux/issues/8722

Alternatively, since you just built a nice PC, you can take the free options and just software emulate classic systems and run MAME. If you don't have time to set much up, look into a Batocera boot drive https://batocera.org/