VanguardLH wrote:

Rufus (free)
https://rufus.ie/
https://www.youtube.com/results?sear...rufus+bootable

WinUSB (seems to be free)
https://www.winusb.net/
Doesn't require reformatting, so you can leave your data files on the
USB drive and add the boot records as long as there is enough additional
space on the USB drive.

I haven't delved into why but users that have benchmark the file copy
process (extracting files from the .iso file to copy onto the already
prepped target bootable media) have found WinUSB is 12% faster at
copying the files than is Rufus. That's after the formatting has
completed and just for the following files copying.

If you already have a formatted USB drive, WinUSB doesn't require a
format again - but make sure you have enough free space on the bootable
drive to accomodate all of the ISO's files.