How to make a Bootable USB in Linux:
This is an example on how to Build a LastOSLinux using most Linux Distributions, if shows where to download ventoy, how to run it and then picks a Slower Sandisk USB thumb drive to prepare, it then goes on to copy the ISO and the USB_Overlay folder, followed by how to copy your downloaded apps/games into the USB tree so the Store can show them when ran (Can be on ANY system that has the USB stick plugged in and the LastOSLinux Store installed.
Then is the Wait, oh so very long, way about 28 minutes, to get faster speeds use an external portable HDD, these can copy in about 5 minutes. Once the cache is empty (Depending what else your writing to other disks as these may also be using the Write cache), to see your write cache in other Distro's that aren't LastOSLinux, simply open a terminal and run:
watch grep -e Dirty: -e Writeback: /proc/meminfo
This will show the same number as my On Screen monitor does, it should reach 0 or close to it before your USB is safe to unplug. If you have a Light on your USB, when that stops blinking is an easier way to know when it's done and you don't have to do the stuff above.
Congratulations you now have a Bootable USB that should work on a lot of PC's (Not all, the most compatible way to make a Bootable USB is Rufus in Windows 10 or 11 or from one of their LivePE's as included in Last10 and Last11 releases, so you have a working desktop to run Rufus.exe) I'll upload a video showing how to do it in windows next.
To use your bootable USB you can simply figure out which key you need to press to start your boot menu when you reboot your PC, then when you pick the USB disk it'll run Ventoy and let you pick the ISO file (or any ISO thats under 4.7GB) to boot from, Ventoy is the best option for testing most Distro's without having to format it every time, you simply remove any ISO's you don't want and put on the ones you do, no need to keep starting from scratch as the Ventoy boot partition is not visible in Windows or Linux and is safe.
Some PC's will refuse to boot from Ventoy at all, but others require you install the UEFI boot MOK key before it'll allow it - it's included and steps you through doing it.
The benefit to using Rufus is it works on 100% of PC's of any age and puts it all onto 1 partition, it does require you to format and start fresh with every OS you write to it though.
You can download and use VenToy for Windows and it'll be able to copy the process as shown in Linux tutorial, it should be just as compatible.